tcp: add tcp congestion controls.
Disabled zram, zsmalloc and zcache. We have 2gb ram.
Removed zcache option inside building scripts. we don't have zcache anymore.
alucard_hotplug: Use WQ_HIGHPRI.
ONDEMAND: SMART UP Tuning.

Conflicts:
	drivers/cpufreq/cpufreq_ondemand.c
Revert "Use neon-vfpv4 hardfloat"

This reverts commit 963061a9227a4f309c2a770208212c8bec252b25.
use: mhard-float=-Wa,-mfpu=neon-vfpv4 -mfloat-abi=hard
Official kernel 2.6.7a
Enabled ARCH_POWER. Using ARCH POWER enables the use of ARM topology power functions instead of generic ones, and saves battery