dt-bindings: clk: mpfs: add defines for two new clocks

The RTC reference and MSSPLL were previously not documented or defined,
as they were unused. Add their defines to the PolarFire SoC header.

Fixes: 2145bb6 ("dt-bindings: clk: microchip: Add Microchip PolarFire host binding")
Reviewed-by: Daire McNamara <[email protected]>
Signed-off-by: Conor Dooley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Acked-by: Krzysztof Kozlowski <[email protected]>
Acked-by: Palmer Dabbelt <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>

Author: ConchuOD

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

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
 /*
  * Daire McNamara,<[email protected]>
- * Copyright (C) 2020 Microchip Technology Inc.  All rights reserved.
+ * Copyright (C) 2020-2022 Microchip Technology Inc.  All rights reserved.
  */
 
 #ifndef _DT_BINDINGS_CLK_MICROCHIP_MPFS_H_
@@ -42,4 +42,7 @@
 #define CLK_ATHENA	31
 #define CLK_CFM		32
 
+#define CLK_RTCREF	33
+#define CLK_MSSPLL	34
+
 #endif	/* _DT_BINDINGS_CLK_MICROCHIP_MPFS_H_ */