msm: vidc: enable video core clock to 266Mhz

This change will ensure that video core clock is
set to 266Mhz on supported devices, else fallback
to 228Mhz.

(cherry picked from commit 2cd6f1a77d845c162966b974b0e9dd4db0878020)

Change-Id: Ib314fc75ff11df04d50a023d39576b8c9fb11371
Signed-off-by: Arun Menon <menon@codeaurora.org>
Signed-off-by: Jessica Gonzalez <jgaona@codeaurora.org>
msm: kgsl: Remove lowest power level

The lowest power level does not correspond to significant
power savings as the whole system doesn't drop to SVS
voltage.  Performace is improved without this level for
serialized test cases.

Signed-off-by: Lucille Sylvester <lsylvest@codeaurora.org>
(cherry picked from commit c8404a799a26f0744d3965822160c7b05b8d33d7)

Change-Id: Ie349451ffcd82f159eb4d25ad0b986b38f817ede
Signed-off-by: Sivasri Kumar Vanka <sivasri@codeaurora.org>

Conflicts:
	arch/arm/mach-msm/devices-8960.c