uboot-mediatek: add support for MT798x platforms

Import pending patches to support the upcoming Filogic platforms.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

package/boot/uboot-mediatek/patches/200-cmd-add-imsz-and-imszb.patch

@@ -1,9 +1,10 @@
 --- a/cmd/bootm.c
 +++ b/cmd/bootm.c
-@@ -257,6 +257,65 @@ U_BOOT_CMD(
+@@ -257,6 +257,67 @@ U_BOOT_CMD(
  /* iminfo - print header info for a requested image */
  /*******************************************************************/
  #if defined(CONFIG_CMD_IMI)
++#if defined(CONFIG_FIT)
 +#define SECTOR_SHIFT 9
 +static int image_totalsize(struct cmd_tbl *cmdtp, int flag, int argc,
 +			   char *const argv[], short int in_blocks)
@@ -63,6 +64,7 @@
 +	"addr [maxhdrlen] [varname]\n"
 +);
 +
++#endif
  static int do_iminfo(struct cmd_tbl *cmdtp, int flag, int argc,
  		     char *const argv[])
  {