arch/arm/mach-msm/acpuclock-8064.c: increase voltage boost slightly

this boost should resolve most instability issues

Signed-off-by: Paul Reioux <reioux@gmail.com>
arch/arm/mach-msm/Kconfig: decouple QCACHE from MSM board selection

Signed-off-by: Paul Reioux <reioux@gmail.com>
defconfig: enable CPU overclocking