samples: video: capture: Enable deferred logging

Immediate log mode may use a lot of stack and hence may cause some stack
overflow on some boards.

Enable deferred log mode to have the least impact on the application.

Signed-off-by: Phi Bang Nguyen <[email protected]>

Author: ngphibang

samples/drivers/video/capture/prj.conf

@@ -5,3 +5,4 @@ CONFIG_PRINTK=y
 CONFIG_LOG=y
 CONFIG_DISPLAY=y
 CONFIG_REQUIRES_FLOAT_PRINTF=y
+CONFIG_LOG_MODE_DEFERRED=y