b43: use enum for firmware header format

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index c818b0b..39baaaf 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -694,6 +694,11 @@
 	enum b43_firmware_file_type type;
 };
 
+enum b43_firmware_hdr_format {
+	B43_FW_HDR_410,
+	B43_FW_HDR_351,
+};
+
 /* Pointers to the firmware data and meta information about it. */
 struct b43_firmware {
 	/* Microcode */
@@ -710,6 +715,9 @@
 	/* Firmware patchlevel */
 	u16 patch;
 
+	/* Format of header used by firmware */
+	enum b43_firmware_hdr_format hdr_format;
+
 	/* Set to true, if we are using an opensource firmware.
 	 * Use this to check for proprietary vs opensource. */
 	bool opensource;