Fix link error due to vehicle_camera_config_flag

When including vehicle_camera.h in multiple sources, there is an linker
error due to multiple definition of vehicle_camera_config_flag.

Bug 32272040

Change-Id: I1d1f9d2c4dc88d5217cb39003cb9be44c3748720
(cherry picked from commit 644a360cff7be804e167258c9d77b6f747096b8a)
1 file changed