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/configs/omap5_uevm_defconfig b/configs/omap5_uevm_defconfig
index d121997..91878c1 100644
--- a/configs/omap5_uevm_defconfig
+++ b/configs/omap5_uevm_defconfig
@@ -47,7 +47,7 @@
 CONFIG_SCSI_AHCI=y
 CONFIG_DFU_MMC=y
 CONFIG_DFU_RAM=y
-CONFIG_CMD_TCA642X=y
+CONFIG_TCA642X=y
 CONFIG_SYS_I2C_LEGACY=y
 CONFIG_SPL_SYS_I2C_LEGACY=y
 CONFIG_SUPPORT_EMMC_BOOT=y