ARM: S5PC11X: improve USB signal quality

Ported from AOSP Samsung source - http://android.git.kernel.org/?p=kernel/samsung.git;a=summary

Tunning of PHY0 Tune Register to improve physical characteristics.
This improves the margin of USB eye diagram, which means
the quality of USB signal is also improved.
Enable Deep Idle Stats by default
Less Debug Stuff Enabled
Lagfree CPU Governor
Added Wheatley governor

For more info, see http://rootzwiki.com/topic/14685-kernel07-jul-glados-v134-testing-v20-for-jb/page__st__90__p__405813#entry405813
Using hard float optimizations
Linux Kernel 3.0.89-rc1
Linux Kernel 3.0.89
Replaced SNAPPY-v3 with faster LZ4 compress/decompress algorithm
Backport zcache and zsmalloc from 3.4
Staging: Migrate Zram to ZsmAlloc
zram: optimize for Android use
zcache: minor fix
fix Zcache and Zram working
Revert "fix Zcache and Zram working"

This reverts commit 57af109bfc899e8d3873452edeb46b4f14ad097d.
Revert "zcache: minor fix"

This reverts commit b7c9c1a2ac464fc055d519e8f6409a2f521fb59e.
Replaced SNAPPY-v3 with faster LZ4 compress/decompress algorithm (reverted from commit 2eae6c1076d26d2426c36da98c8aa7b8edd8e3a4)
Fix optimized zram
Added filesystem dynamic read-ahead Thanks to Chad Gooldman
Revert "Fix optimized zram"

This reverts commit 929292308d7b42852196d58cf0145cb98e5e7d5f.