media: dvb-frontend/mxl5xx: Refactor struct MBIN_FILE_T and MBIN_SEGMENT_T

Replace the older style one-element array with a flexible array member.
There does not seem to be any allocation for these structs in the code, so
no more code changes are required.

The following cocci warnings are fixed:
drivers/media/dvb-frontends/mxl5xx_defs.h:182:4-8: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)
drivers/media/dvb-frontends/mxl5xx_defs.h:171:4-8: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

Signed-off-by: Ricardo Ribalda <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/dvb-frontends/mxl5xx_defs.h

···
 
 struct MBIN_FILE_T {
 	struct MBIN_FILE_HEADER_T header;
-	u8 data[1];
+	u8 data[];
 };
 
 struct MBIN_SEGMENT_HEADER_T {
···
 
 struct MBIN_SEGMENT_T {
 	struct MBIN_SEGMENT_HEADER_T header;
-	u8 data[1];
+	u8 data[];
 };
 
 enum MXL_CMD_TYPE_E { MXL_CMD_WRITE = 0, MXL_CMD_READ };