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/am57xx_hs_evm_usb_defconfig b/configs/am57xx_hs_evm_usb_defconfig
index 014a383..fc1bc01 100644
--- a/configs/am57xx_hs_evm_usb_defconfig
+++ b/configs/am57xx_hs_evm_usb_defconfig
@@ -106,6 +106,7 @@
 CONFIG_PMIC_PALMAS=y
 CONFIG_DM_REGULATOR=y
 CONFIG_DM_REGULATOR_PALMAS=y
+CONFIG_PALMAS_POWER=y
 CONFIG_SCSI_AHCI_PLAT=y
 CONFIG_DM_SERIAL=y
 CONFIG_SPI=y