ramips: Fixes for LinkIt 7688

Misc fixes for LinkIt 7688 board:

- Copy the right wireless firmware for the mt7688
- Add back '0065-mt7688-fixes.patch', left out after the move to Linux 4.4.
- Remove SPI_DEV from linux config which otherwise causes a massive warning
- Add wmac to LINKIT7688.dts so wireless works

Signed-off-by: Adam Kent <adam@semicircular.net>

SVN-Revision: 49130

target/linux/ramips/dts/LINKIT7688.dts

@@ -59,6 +59,10 @@
 		};
 	};
 
+	wmac@10300000 {
+		status = "okay";
+	};
+
 	palmbus@10000000 {
 		spi@b00 {
 			status = "okay";