dt-bindings: clock: mediatek: add entry for Mali-450 node to refer

Just add binding for a required clock referenced by Mali-450 on MT7623
or MT2701 SoC.

Cc: devicetree@vger.kernel.org
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

include/dt-bindings/clock/mt2701-clk.h

@@ -431,6 +431,10 @@
 #define CLK_ETHSYS_CRYPTO			8
 #define CLK_ETHSYS_NR				9
 
+/* G3DSYS */
+#define CLK_G3DSYS_CORE				1
+#define CLK_G3DSYS_NR				2
+
 /* BDP */
 
 #define CLK_BDP_BRG_BA				1