bootstrap: Remove useless check

Change-Id: Id10b489edbc25e638fac7ff6248851ed4fc22fd7
bootstrap: Merge uart script

Change-Id: I9aaba157884543bc1aedd3456022f3e0bba82dfc
bootstrap: merge recovery and boot script.

Change-Id: I812e2426678359329fc121dcecf12e102910de55
bootstrap: Use third key for test kernels.

Change-Id: I334d2a1f2f09bb27bf4a1bceb03aef797b093022
Use gcc 4.8

Change-Id: I36423d7f44150d69edc0dcf1bfd7e3dbb96bda23