dt-bindings: soc: ti: pruss: Add clocks for ICSSG

The ICSSG module has 7 clocks for each instance.

These clocks are ICSSG0_CORE_CLK, ICSSG0_IEP_CLK, ICSSG0_ICLK,
ICSSG0_UART_CLK, RGMII_MHZ_250_CLK, RGMII_MHZ_50_CLK and RGMII_MHZ_5_CLK
These clocks are described in AM64x TRM Section 6.4.3 Table 6-398.

Add these clocks to the dt binding of ICSSG.

Link: https://www.ti.com/lit/pdf/spruim2 (AM64x TRM)
Signed-off-by: MD Danish Anwar <[email protected]>
Reviewed-by: Roger Quadros <[email protected]>
Acked-by: Conor Dooley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Nishanth Menon <[email protected]>

Author: danish-ti

Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml

@@ -92,6 +92,16 @@ properties:
     description: |
       This property is as per sci-pm-domain.txt.
 
+  clocks:
+    items:
+      - description: ICSSG_CORE Clock
+      - description: ICSSG_IEP Clock
+      - description: ICSSG_RGMII_MHZ_250 Clock
+      - description: ICSSG_RGMII_MHZ_50 Clock
+      - description: ICSSG_RGMII_MHZ_5 Clock
+      - description: ICSSG_UART Clock
+      - description: ICSSG_ICLK Clock
+
 patternProperties:
 
   memories@[a-f0-9]+$: