Galaxys2: sdcard config update

Fixes inability to mount/unmount sdcard in Settins/Storage for
Galaxys2 family.

Based on SlimRom commit: https://gerrit.slimroms.net/#/c/3557/
Author: xLaMbChOpSx<ryanskungfu@me.com>

Change-Id: I2177285ad18cd644b6036c33b6d66f5fa58e2e9b