bn omap4-common (acclaim): add build barrier for just acclaim to avoid conflict with HD models

Change-Id: Idc6f038bc7e0fba36d7197b41a7bc2f40ee16601
bn omap4-common (acclaim): fix random gralloc symlink build break

Change-Id: Icaf83bd718b7e681db3b6cac92e05daa6cd4ee24