USB: msm_otg: Add support to pass VDDCX voting

Discrete voltages and corner values for voting VDDCX might
change from platform to platform. Hence add support for passing
either voltage values or corner values from device tree.

Change-Id: Ib14151e53260f753c707dbad3cdeec1e69875761
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
2 files changed