platform: msm8909: Poll PLL_MODE register for PLL_ACTIVE_FLAG for stromer PLLs.

GPLL0 is a stromer PLL in MSM8909. Do not rely on the status register to check
if the PLL is active, rather use PLL_MODE register to check for PLL_ACTIVE_FLAG.

Change-Id: I5f1b57ee91d082b18e816eb8b8de87056b5bd095
2 files changed