power: axp818: Fix DCDC5 default voltage

DCDC5 is designed to supply VCC-DRAM, which is normally 1.5V for DDR3,
1.35V for DDR3L, and 1.2V for LPDDR3.

Also remove CONFIG_AXP_DCDC5_VOLT from h8_homlet_v2_defconfig.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

configs/h8_homlet_v2_defconfig

@@ -12,4 +12,3 @@ CONFIG_SPL=y
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
 CONFIG_AXP_DCDC1_VOLT=3000
-CONFIG_AXP_DCDC5_VOLT=1500

drivers/power/Kconfig

@@ -118,13 +118,12 @@ config AXP_DCDC4_VOLT
 config AXP_DCDC5_VOLT
 	int "axp pmic dcdc5 voltage"
 	depends on AXP221_POWER || AXP818_POWER
-	default 1800 if AXP818_POWER
 	default 1500 if MACH_SUN6I || MACH_SUN8I
 	---help---
 	Set the voltage (mV) to program the axp pmic dcdc5 at, set to 0 to
 	disable dcdc5.
 	On A23 / A31 / A33 / A83T boards dcdc5 is VCC-DRAM and should be 1.5V,
-	1.8V for A83T.
+	1.35V if DDR3L is used.
 
 config AXP_ALDO1_VOLT
 	int "axp pmic (a)ldo1 voltage"