sunxi: power: Change A23/A33 VDD-SYS default from 1.2V to 1.1V

Change the axp223 dcdc2 / VDD-SYS default from 1.2V to 1.1V, 1.1V is the
value recommended by Allwinner and is what most fex files specify.

This has been tested on a number of A23/A33 tablets including on an
A23 Ippo-q8h-v1.2 PCB tablet which has a fex file which specifies 1.2V
(which is where our original 1.2V default comes from).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

configs/gt90h_v4_defconfig

@@ -20,7 +20,6 @@ CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=5"
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
-CONFIG_AXP_DCDC2_VOLT=1100
 CONFIG_AXP_DLDO1_VOLT=3300
 CONFIG_AXP_ALDO1_VOLT=3000
 CONFIG_USB_MUSB_HOST=y

drivers/power/Kconfig

@@ -53,13 +53,14 @@ config AXP_DCDC2_VOLT
 	int "axp pmic dcdc2 voltage"
 	depends on AXP152_POWER || AXP209_POWER || AXP221_POWER
 	default 1400 if AXP152_POWER || AXP209_POWER
-	default 1200 if MACH_SUN6I || MACH_SUN8I
+	default 1200 if MACH_SUN6I
+	default 1100 if MACH_SUN8I
 	---help---
 	Set the voltage (mV) to program the axp pmic dcdc2 at, set to 0 to
 	disable dcdc2.
 	On A10(s) / A13 / A20 boards dcdc2 is VDD-CPU and should be 1.4V.
 	On A31 boards dcdc2 is used for VDD-GPU and should be 1.2V.
-	On A23/A33 boards dcdc2 is used for VDD-SYS and should be 1.2V.
+	On A23/A33 boards dcdc2 is used for VDD-SYS and should be 1.1V.
 
 config AXP_DCDC3_VOLT
 	int "axp pmic dcdc3 voltage"