delete old USERLAND_BUILD_USE_ARM_VCOS flag

Change-Id: I0cba30d12d1b7e30999afa12d3a12915aef0823a
added return value to prevent compiler error

Change-Id: I0b1d669e5773a03211da40852ee3a93fc428bf73
moved cflags and include definitions

Change-Id: Iccb4441dd7c3399a9ad8bc06aa08e46ec41eb9bc
added libgralloc_brcm dependencies to build

Change-Id: Ic58ddac3d3acb9c74480319154a96e5555eb8a34