staging: vc04_services: use KBUILD_MODNAME instead of own module name definition

Remove own module name definition and use KBUILD_MODNAME instead, which
is the standard way of getting the module name.

While at it, one realignment was made to improve readability.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Gaston Gonzalez <gascoar@gmail.com>
Link: https://lore.kernel.org/r/20220107234620.49900-3-gascoar@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c

@@ -33,7 +33,6 @@
 #include "mmal-parameters.h"
 #include "bcm2835-camera.h"
 
-#define BM2835_MMAL_MODULE_NAME "bcm2835-v4l2"
 #define MIN_WIDTH 32
 #define MIN_HEIGHT 32
 #define MIN_BUFFER_SIZE (80 * 1024)
@@ -1893,8 +1892,7 @@ static int bcm2835_mmal_probe(struct platform_device *pdev)
 		dev->capture.fmt = &formats[3]; /* JPEG */
 
 		/* v4l device registration */
-		dev->camera_num = v4l2_device_set_name(&dev->v4l2_dev,
-						       BM2835_MMAL_MODULE_NAME,
+		dev->camera_num = v4l2_device_set_name(&dev->v4l2_dev, KBUILD_MODNAME,
 						       &camera_instance);
 		ret = v4l2_device_register(NULL, &dev->v4l2_dev);
 		if (ret) {