vfe32: Separate AXI reset with VFE reset.

Refactor reset to axi_reset and vfe_reset. axi_reset
initializes stream off/on, irq related registers.
vfe_reset only handles stuff related to VFE components.

VFE_RESET_2 is removed. Both axi_reset and vfe_reset
are synchronous calls.

Change-Id: I274c17defbfbc56056b020c48239696b0f579b0e
Signed-off-by: Shuzhen Wang <shuzhenw@codeaurora.org>
diff --git a/include/media/msm_camera.h b/include/media/msm_camera.h
index db88540..588fd07 100644
--- a/include/media/msm_camera.h
+++ b/include/media/msm_camera.h
@@ -498,6 +498,7 @@
 
 #define CMD_AXI_START  0xE1
 #define CMD_AXI_STOP   0xE2
+#define CMD_AXI_RESET  0xE3
 
 
 #define AXI_CMD_PREVIEW      BIT(0)