Revert "msm7x30: uze lz4 for ramdisk compression"

Seems to make boot time slower. Switch back to lzo

This reverts commit 456c7a9dfc1ab8b52418ee7306139723f00e559b.

Change-Id: I3e2cc1b949916777fa4cec8e6890f4ac4e297bad
Merge pull request #2 from LegacyXperia/cm-10.2

Revert "msm7x30: uze lz4 for ramdisk compression"