arm:build add flags for AM335X
arm:build add flags for AM335X

Change-Id: I1fd25d5ada52972fd2f6ec5057ff273544c65390

veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi