encore_cm10.1_defconfig: don't use true color for Boxer panel

This hurts performance, and 16-bit color no longer looks terrible after
http://review.cyanogenmod.org/35240 was merged.
OMAP3: PVR: enable informing PM subsystem of our bus throughput requirements

Leads to better performance, particularly in CPU/DSP-light workloads
where cpufreq would otherwise dial down the L3 bus clock frequency.

Discovered in the LGE Sniper source by keyodi.

Discovered-by: keyodi <zeusomighty@hotmail.com>