ramips: GnuBee PC1 fix clock skew

The GnuBee Personal Cloud One shipped with the bootloader set to 900Mhz.
This patch sets the sysclock to 900MHz to fix the clock skew.

Signed-off-by: L. D. Pinney <ldpinney@gmail.com>

target/linux/ramips/dts/GB-PC1.dts

@@ -102,6 +102,11 @@
 	};
 };
 
+&sysclock {
+			compatible = "fixed-clock";
+			clock-frequency = <90000000>;
+};
+
 &pcie {
 	status = "okay";
 };