kconfig: add blank Kconfig files

This would be useful to start moving various config options.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/Kconfig b/drivers/Kconfig
new file mode 100644
index 0000000..128736d
--- /dev/null
+++ b/drivers/Kconfig
@@ -0,0 +1,51 @@
+menu "Device Drivers"
+
+source "drivers/core/Kconfig"
+
+source "drivers/pci/Kconfig"
+
+source "drivers/pcmcia/Kconfig"
+
+source "drivers/mtd/Kconfig"
+
+source "drivers/block/Kconfig"
+
+source "drivers/misc/Kconfig"
+
+source "drivers/net/Kconfig"
+
+source "drivers/input/Kconfig"
+
+source "drivers/serial/Kconfig"
+
+source "drivers/tpm/Kconfig"
+
+source "drivers/i2c/Kconfig"
+
+source "drivers/spi/Kconfig"
+
+source "drivers/gpio/Kconfig"
+
+source "drivers/power/Kconfig"
+
+source "drivers/hwmon/Kconfig"
+
+source "drivers/watchdog/Kconfig"
+
+source "drivers/video/Kconfig"
+
+source "drivers/sound/Kconfig"
+
+source "drivers/usb/Kconfig"
+
+source "drivers/dfu/Kconfig"
+
+source "drivers/mmc/Kconfig"
+
+source "drivers/rtc/Kconfig"
+
+source "drivers/dma/Kconfig"
+
+source "drivers/crypto/Kconfig"
+
+endmenu
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/block/Kconfig
diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/core/Kconfig
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/crypto/Kconfig
diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/dfu/Kconfig
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/dma/Kconfig
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/gpio/Kconfig
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/hwmon/Kconfig
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/i2c/Kconfig
diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/input/Kconfig
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/misc/Kconfig
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/mmc/Kconfig
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/mtd/Kconfig
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/net/Kconfig
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/pci/Kconfig
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/pcmcia/Kconfig
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/power/Kconfig
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/rtc/Kconfig
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/serial/Kconfig
diff --git a/drivers/sound/Kconfig b/drivers/sound/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/sound/Kconfig
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/spi/Kconfig
diff --git a/drivers/tpm/Kconfig b/drivers/tpm/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/tpm/Kconfig
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/usb/Kconfig
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/video/Kconfig
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/watchdog/Kconfig