Logically from RESET to RESET_ACK, no interrupt should be generated from hardware. Synchronous RESET call makes code flow simpler. Create a new ISP command VFE_CMD_RESET_2 which blocks until RESET_ACK irq fires. Change-Id: I1c1974c01d7037f457ab767a83f5cece3fe23705 Signed-off-by: Shuzhen Wang <shuzhenw@codeaurora.org>