Convert CONFIG_HIKEY_GPIO et al to Kconfig

This converts the following to Kconfig:
   CONFIG_HIKEY_GPIO
   CONFIG_TCA642X

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index ff87fbf..e007b38 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -169,6 +169,10 @@
 	  This driver supports the Fairchild FXL6408 device. FXL6408 is a
 	  fully configurable 8-bit I2C-controlled GPIO expander.
 
+config HIKEY_GPIO
+	bool "HI6220 GPIO driver"
+	depends on DM_GPIO
+
 config INTEL_BROADWELL_GPIO
 	bool "Intel Broadwell GPIO driver"
 	depends on DM
@@ -374,8 +378,13 @@
 	help
 	  This config enable the Xilinx GPIO driver for Microblaze.
 
+config TCA642X
+	bool "TCA642x legacy GPIO driver"
+
 config CMD_TCA642X
 	bool "tca642x - Command to access tca642x state"
+	depends on TCA642X
+	default y
 	help
 	  DEPRECATED - This needs conversion to driver model