msm: camera: isp: Change local variable from uint32_t to int

Change the local variable num_wm from uint32_t to int so that
the error from cam_vfe_bus_get_num_wm() is correctly caught.

Change-Id: Ia03002bb199af49a60d818950b904c313367f93b
Signed-off-by: Harsh Shah <harshs@codeaurora.org>
1 file changed