dt-bindings: clock: mediatek: add binding for fixed-factor clock axisel_d4

Just add binding for a fixed-factor clock axisel_d4, which would be
referenced by PWM devices on MT7623 or MT2701 SoC.

Cc: stable@vger.kernel.org
Fixes: 1de9b216 ("clk: mediatek: Add dt-bindings for MT2701 clocks")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

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

@@ -176,7 +176,8 @@
 #define CLK_TOP_AUD_EXT1			156
 #define CLK_TOP_AUD_EXT2			157
 #define CLK_TOP_NFI1X_PAD			158
-#define CLK_TOP_NR				159
+#define CLK_TOP_AXISEL_D4			159
+#define CLK_TOP_NR				160
 
 /* APMIXEDSYS */