smdk4412-common: BoardCommonConfig: add TARGET_CPU_VARIANT

Change-Id: I726d95bf7b2880b0cb600f6e6ba2ecc788b28135
smdk4412: Fix EGL extension failing (good ol' times) and fix build

Yeah, that did happen already in the past... Love you.

Change-Id: I932896e2f47fb2f833200010bca22ccde8a2aac4
BoardCommonConfig: remove GL hack at device tree level

Change-Id: Iaacaa651ca3b762a926cc69bb4fcecfb65348452
smdk4412: remove vold.fstab and recovery.rc, reorg rootdir

Change-Id: Ibae8f76260001c0e1f672376db92c60c6d580c10