input: atmel-mxt-ts: Provide firmware name via platform data

This allows firmware upgrade only when a firmware name is provided.
The platform data (config data) of the latest firmware will point
to a NULL string which prevents auto firmware upgrade at boot
(if enabled by the userspace).

Change-Id: Ifef57a9dab9306cf4f1fe7a6c7e52c5e92a25d4a
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h
index 500ee6b..3ac41bc 100644
--- a/include/linux/i2c/atmel_mxt_ts.h
+++ b/include/linux/i2c/atmel_mxt_ts.h
@@ -37,6 +37,8 @@
 	u8 variant_id;
 	u8 version;
 	u8 build;
+	/* Points to the firmware name to be upgraded to */
+	const char *fw_name;
 };
 
 /* The platform data for the Atmel maXTouch touchscreen driver */