dt-bindings: clock: at91: Allow PLLs to be exported and referenced in DT

Allow PLLADIV2 and LVDSPLL to be referenced as a PMC_TYPE_CORE
clock from phandle in DT for sam9x7 SoC family.

Signed-off-by: Varshini Rajendran <varshini.rajendran@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Link: https://lore.kernel.org/r/20240729070803.1990916-1-varshini.rajendran@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>

Author: varshini-rajendran

include/dt-bindings/clock/at91.h

@@ -38,6 +38,10 @@
 #define PMC_CPU			(PMC_MAIN + 9)
 #define PMC_MCK1		(PMC_MAIN + 10)
 
+/* SAM9X7 */
+#define PMC_PLLADIV2		(PMC_MAIN + 11)
+#define PMC_LVDSPLL		(PMC_MAIN + 12)
+
 #ifndef AT91_PMC_MOSCS
 #define AT91_PMC_MOSCS		0		/* MOSCS Flag */
 #define AT91_PMC_LOCKA		1		/* PLLA Lock */