treewide: Drop bootm_headers_t typedef

This is not needed and we should avoid typedefs. Use the struct instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 8ab0ff5..3041873 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -281,7 +281,7 @@
 		return EFI_SUCCESS;
 	}
 #else
-	bootm_headers_t img = { 0 };
+	struct bootm_headers img = { 0 };
 	efi_status_t ret;
 
 	if (fdt == EFI_FDT_USE_INTERNAL) {
diff --git a/cmd/booti.c b/cmd/booti.c
index 397d4b8..6ac3919 100644
--- a/cmd/booti.c
+++ b/cmd/booti.c
@@ -21,7 +21,7 @@
  * Image booting support
  */
 static int booti_start(struct cmd_tbl *cmdtp, int flag, int argc,
-		       char *const argv[], bootm_headers_t *images)
+		       char *const argv[], struct bootm_headers *images)
 {
 	int ret;
 	ulong ld;
diff --git a/cmd/bootz.c b/cmd/bootz.c
index 4f024bd..f142357 100644
--- a/cmd/bootz.c
+++ b/cmd/bootz.c
@@ -25,7 +25,7 @@
  * zImage booting support
  */
 static int bootz_start(struct cmd_tbl *cmdtp, int flag, int argc,
-		       char *const argv[], bootm_headers_t *images)
+		       char *const argv[], struct bootm_headers *images)
 {
 	int ret;
 	ulong zi_start, zi_end;