Input: elantech - use all 3 bytes when checking version

Apparently all 3 bytes returned by ETP_FW_VERSION_QUERY are significant
and should be taken into account when matching hardware version/features.

Tested-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h
index feac5f7..ac57bde 100644
--- a/drivers/input/mouse/elantech.h
+++ b/drivers/input/mouse/elantech.h
@@ -100,11 +100,10 @@
 	unsigned char reg_26;
 	unsigned char debug;
 	unsigned char capabilities;
-	unsigned char fw_version_maj;
-	unsigned char fw_version_min;
-	unsigned char hw_version;
 	unsigned char paritycheck;
 	unsigned char jumpy_cursor;
+	unsigned char hw_version;
+	unsigned int  fw_version;
 	unsigned char parity[256];
 };