smdk4412-common: BoardCommonConfig: add TARGET_CPU_VARIANT

Change-Id: I726d95bf7b2880b0cb600f6e6ba2ecc788b28135
(cherry picked from commit bdb3fa36de5f93aec901ab135b5d3f6e381504dc)
smdk4412: Fix EGL extension failing (good ol' times) and fix build

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

Change-Id: I932896e2f47fb2f833200010bca22ccde8a2aac4
(cherry picked from commit e705574d0bcdfcb44a9e5ed71312637a5a2912d8)
BoardCommonConfig: remove GL hack at device tree level

Change-Id: Iaacaa651ca3b762a926cc69bb4fcecfb65348452
(cherry picked from commit e6720fe661f165964e86a7548b1cc38bbfc6b006)
smdk4412: remove vold.fstab and recovery.rc, reorg rootdir

Change-Id: Ibae8f76260001c0e1f672376db92c60c6d580c10
(cherry picked from commit 9ca23f8b82d8acc777b36bd0ef47a30d42b1716a)