ARM: dts: msm: Change allowed voltage range on SMPA4 for msm8226
ARM: dts: msm: Change allowed voltage range on SMPA4 for msm8226

Regulator S4 can have voltage from 1.8 volts to 2.2 volts on msm8226
Change the constraints for regulator S4 to allow voltage range from
1.8 volts to 2.2 volts, set initial voltage to 1.8 volts

Change-Id: I184c5df1cfe2f75caed083149f576c81592ea69c
Signed-off-by: Bhalchandra Gajare <cac8f1374f09dbc1c6aca92670793f9e5b08a323@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas