dt-bindings: mfd: syscon: Add microchip,sama7d65-sfrbu

Add SAMA7D65 SFRBU compatible string to DT bindings documentation

Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Acked-by: "Rob Herring (Arm)" <robh@kernel.org>
Link: https://lore.kernel.org/r/92543fcff4ab35e770b01d4c15d45cc5d55833f4.1740671156.git.Ryan.Wanner@microchip.com
Signed-off-by: Lee Jones <lee@kernel.org>

Author: ryan-wanner

Documentation/devicetree/bindings/mfd/syscon.yaml

@@ -92,6 +92,7 @@ select:
           - microchip,mpfs-sysreg-scb
           - microchip,sam9x60-sfr
           - microchip,sama7d65-ddr3phy
+          - microchip,sama7d65-sfrbu
           - microchip,sama7g5-ddr3phy
           - mscc,ocelot-cpu-syscon
           - mstar,msc313-pmsleep
@@ -194,6 +195,7 @@ properties:
           - microchip,mpfs-sysreg-scb
           - microchip,sam9x60-sfr
           - microchip,sama7d65-ddr3phy
+          - microchip,sama7d65-sfrbu
           - microchip,sama7g5-ddr3phy
           - mscc,ocelot-cpu-syscon
           - mstar,msc313-pmsleep