MIPS: bcm963xx: Update bcm_tag field image_sequence

The "dual_image" and "inactive_flag" fields should be merged into a single
"image_sequence" field.

Signed-off-by: Simon Arlott <[e-mail]>
Cc: David Woodhouse <[e-mail]>
Cc: Brian Norris <[e-mail]>
Cc: Kevin Cernekee <[e-mail]>
Cc: Florian Fainelli <[e-mail]>
Cc: Jonas Gorski <[e-mail]>
Cc: Linux Kernel Mailing List <[e-mail]>
Cc: MIPS Mailing List <[e-mail]>
Cc: MTD Maling List <[e-mail]>
Patchwork: https://patchwork.linux-mips.org/patch/11834/
Signed-off-by: Ralf Baechle <[e-mail]>

include/linux/bcm963xx_tag.h

···
 #define CHIPID_LEN		6	/* Chip Id Length */
 #define IMAGE_LEN		10	/* Length of Length Field */
 #define ADDRESS_LEN		12	/* Length of Address field */
-#define DUALFLAG_LEN		2	/* Dual Image flag Length */
-#define INACTIVEFLAG_LEN	2	/* Inactie Flag Length */
+#define IMAGE_SEQUENCE_LEN	4	/* Image sequence Length */
 #define RSASIG_LEN		20	/* Length of RSA Signature in tag */
 #define TAGINFO1_LEN		30	/* Length of vendor information field1 in tag */
 #define FLASHLAYOUTVER_LEN	4	/* Length of Flash Layout Version String tag */
···
 	char kernel_address[ADDRESS_LEN];
 	/* 128-137: Size of kernel */
 	char kernel_length[IMAGE_LEN];
-	/* 138-139: Unused at the moment */
-	char dual_image[DUALFLAG_LEN];
-	/* 140-141: Unused at the moment */
-	char inactive_flag[INACTIVEFLAG_LEN];
+	/* 138-141: Image sequence number
+	 * (to be incremented when flashed with a new image)
+	 */
+	char image_sequence[IMAGE_SEQUENCE_LEN];
 	/* 142-161: RSA Signature (not used; some vendors may use this) */
 	char rsa_signature[RSASIG_LEN];
 	/* 162-191: Compilation and related information (not used in OpenWrt) */