media: atomisp:use ARRAY_SIZE() instead of open coding

The array_length() macro just duplicates ARRAY_SIZE(), so we can
delete it.
Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css.c

@@ -451,8 +451,6 @@ static enum ia_css_frame_format yuv422_copy_formats[] = {
 	IA_CSS_FRAME_FORMAT_YUYV
 };
 
-#define array_length(array) (sizeof(array)/sizeof(array[0]))
-
 /* Verify whether the selected output format is can be produced
  * by the copy binary given the stream format.
  * */
@@ -468,7 +466,7 @@ verify_copy_out_frame_format(struct ia_css_pipe *pipe)
 	switch (pipe->stream->config.input_config.format) {
 	case IA_CSS_STREAM_FORMAT_YUV420_8_LEGACY:
 	case IA_CSS_STREAM_FORMAT_YUV420_8:
-		for (i=0; i<array_length(yuv420_copy_formats) && !found; i++)
+		for (i=0; i<ARRAY_SIZE(yuv420_copy_formats) && !found; i++)
 			found = (out_fmt == yuv420_copy_formats[i]);
 		break;
 	case IA_CSS_STREAM_FORMAT_YUV420_10:
@@ -476,7 +474,7 @@ verify_copy_out_frame_format(struct ia_css_pipe *pipe)
 		found = (out_fmt == IA_CSS_FRAME_FORMAT_YUV420_16);
 		break;
 	case IA_CSS_STREAM_FORMAT_YUV422_8:
-		for (i=0; i<array_length(yuv422_copy_formats) && !found; i++)
+		for (i=0; i<ARRAY_SIZE(yuv422_copy_formats) && !found; i++)
 			found = (out_fmt == yuv422_copy_formats[i]);
 		break;
 	case IA_CSS_STREAM_FORMAT_YUV422_10: