Force gcc 4.6 for ARM_EABI_TOOLCHAIN

GCC 4.7 is causing stability problems for the kernel. This will
not affect the ANDROID_EABI_TOOLCHAIN version.

Change-Id: I9b73833596e7c4e7874e3af3614b476d6dd38f43
Load additional modules after mounting /system

Change-Id: I92cc14121f92db1ad794af5eb3a73db9ef0f8683