ARM: dts: kirkwood: Fix SATA pinmux-ing for TS419

The old board code for the TS419 assigns MPP pins 15 and 16 as SATA
activity signals (and none as SATA presence signals).  Currently the
device tree assigns the SoC's default pinmux groups for SATA, which
conflict with the second Ethernet port.

Reported-by: gmbh@gazeta.pl
Tested-by: gmbh@gazeta.pl
References: https://bugs.debian.org/855017
Cc: stable@vger.kernel.org # 3.15+
Fixes: 934b524 ("ARM: Kirkwood: Add DT description of QNAP 419")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Link: deepin-community#534
(cherry picked from commit 292c617eea5e5c02c3ffd149d9c6ffd56602e721)
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Author: bwhacks

arch/arm/boot/dts/marvell/kirkwood-ts419.dtsi

@@ -67,3 +67,11 @@
 		phy-handle = <&ethphy1>;
 	};
 };
+
+&pmx_sata0 {
+	marvell,pins = "mpp15";
+};
+
+&pmx_sata1 {
+	marvell,pins = "mpp16";
+};