Added kernel config option 'S5PV210_BIGMEM'.

Conflicts:
	arch/arm/mach-s5pv210/Kconfig
	arch/arm/mach-s5pv210/mach-herring.c

Change-Id: I507a0489e33137115eef4a79ca8ae8d3da3b5ceb
Added optimized CRC32 algorithm.
Added optimized ARM RWSEM algorithm.
Added kernel config option 'PVR_LIMIT_MINFREQ'.
Increased default readahead value to 1024kB.