dt-bindings: clock: mpfs: add more MSSPLL output definitions

There are 3 undocumented outputs of the MSSPLL that are used for the CAN
bus, "user crypto" module and eMMC. Add their clock IDs so that they can
be hooked up in DT.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

Author: ConchuOD

include/dt-bindings/clock/microchip,mpfs-clock.h

@@ -44,6 +44,11 @@
 
 #define CLK_RTCREF	33
 #define CLK_MSSPLL	34
+#define CLK_MSSPLL0	34
+#define CLK_MSSPLL1	35
+#define CLK_MSSPLL2	36
+#define CLK_MSSPLL3	37
+/* 38 is reserved for MSS PLL internals */
 
 /* Clock Conditioning Circuitry Clock IDs */