Convert CONFIG_PALMAS_POWER to Kconfig

This converts the following to Kconfig:
   CONFIG_PALMAS_POWER

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/dra7xx_hs_evm_defconfig b/configs/dra7xx_hs_evm_defconfig
index 51ffd27..63b8f2b 100644
--- a/configs/dra7xx_hs_evm_defconfig
+++ b/configs/dra7xx_hs_evm_defconfig
@@ -124,6 +124,7 @@
 CONFIG_DM_REGULATOR_GPIO=y
 CONFIG_DM_REGULATOR_PALMAS=y
 CONFIG_DM_REGULATOR_LP873X=y
+CONFIG_PALMAS_POWER=y
 CONFIG_DM_SCSI=y
 CONFIG_DM_SERIAL=y
 CONFIG_SPI=y