Samsung msm7x27: rename DECLARE_MUTEX to DEFINE_SEMAPHORE

Change-Id: I359289a12d102032b010570472fc05a2ada67bfe
lcdc_s6d04h0a_tass: fix build error on 3.0 kernel

Change-Id: I179a225a41ccee96246c0a6227d904e92be1b356