arm/dt: msm8974: Use corner voltages for VDDCX
arm/dt: msm8974: Use corner voltages for VDDCX

USB2 driver is voting for discrete voltages for VDDCX instead
of corner voltages. Hence use corner voltages to allow CPR
dynamically scale the voltage to meet performance requirements
of corner.

Change-Id: Idb0096710e4bed4030d0b35f78289530843e0f99
Signed-off-by: Manu Gautam <51907cac86db5f2ed57a4ac58c042ecc27c0b352@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