cmd: qfw: rename qemu_fw_cfg.[c|h] to qfw.[c|h]

Make file names consistent with CONFIG_QFW and CONFIG_CMD_QFW

Signed-off-by: Miao Yan <yanmiaobest@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index fa53700..c40f6b5 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -142,6 +142,6 @@
 	bool
 	help
 	  Hidden option to enable QEMU fw_cfg interface. This will be selected by
-	  either CONFIG_CMD_QEMU_FW_CFG or CONFIG_GENERATE_ACPI_TABLE.
+	  either CONFIG_CMD_QFW or CONFIG_GENERATE_ACPI_TABLE.
 
 endmenu
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 4893086..98704f2 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -43,4 +43,4 @@
 obj-$(CONFIG_RESET) += reset-uclass.o
 obj-$(CONFIG_FSL_DEVICE_DISABLE) += fsl_devdis.o
 obj-$(CONFIG_WINBOND_W83627) += winbond_w83627.o
-obj-$(CONFIG_QFW) += qemu_fw_cfg.o
+obj-$(CONFIG_QFW) += qfw.o
diff --git a/drivers/misc/qemu_fw_cfg.c b/drivers/misc/qfw.c
similarity index 98%
rename from drivers/misc/qemu_fw_cfg.c
rename to drivers/misc/qfw.c
index 0f72549..59d9376 100644
--- a/drivers/misc/qemu_fw_cfg.c
+++ b/drivers/misc/qfw.c
@@ -8,7 +8,7 @@
 #include <command.h>
 #include <errno.h>
 #include <malloc.h>
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
 #include <asm/io.h>
 #include <linux/list.h>