ls1046ardb: Add support power initialization

Add the chip power supply voltage initialization on LS1046ARDB.
Add function power_init_board(), and it will initialize the
PMIC and call the chip power initialization function.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 0ed36cd..80038ec 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -844,6 +844,7 @@
 	select ARMV8_MULTIENTRY
 	select SUPPORT_SPL
 	select DM_SPI_FLASH if DM_SPI
+	select POWER_MC34VR500
 	help
 	  Support for Freescale LS1046ARDB platform.
 	  The LS1046A Reference Design Board (RDB) is a high-performance