wl18xx: ignore irrelevant firmware version fields

For wl18xx, only the chip ID and the minor version number are
relevant.  Ignore the other numbers which are either not used or
relate to internal projects or internal branches.
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/ti/wl18xx/wl18xx.h

@@ -27,8 +27,8 @@
 /* minimum FW required for driver */
 #define WL18XX_CHIP_VER		8
 #define WL18XX_IFTYPE_VER	5
-#define WL18XX_MAJOR_VER	0
-#define WL18XX_SUBTYPE_VER	0
+#define WL18XX_MAJOR_VER	WLCORE_FW_VER_IGNORE
+#define WL18XX_SUBTYPE_VER	WLCORE_FW_VER_IGNORE
 #define WL18XX_MINOR_VER	28
 
 #define WL18XX_CMD_MAX_SIZE          740