camera: vfe32: Create synchronous version of VFE reset cmd.

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>