dt-bindings: riscv: Add Ziccrse ISA extension description

Add description for the Ziccrse ISA extension which was ratified in
the riscv profiles specification v1.0.

Signed-off-by: Alexandre Ghiti <[email protected]>
Reviewed-by: Guo Ren <[email protected]>
Acked-by: Conor Dooley <[email protected]>
Reviewed-by: Andrew Jones <[email protected]>
Reviewed-by: Andrea Parri <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>

Author: Alexandre Ghiti

Documentation/devicetree/bindings/riscv/extensions.yaml

@@ -296,6 +296,12 @@ properties:
             in commit 64074bc ("Update version numbers for Zfh/Zfinx") of
             riscv-isa-manual.
 
+        - const: ziccrse
+          description:
+            The standard Ziccrse extension which provides forward progress
+            guarantee on LR/SC sequences, as ratified in commit b1d806605f87
+            ("Updated to ratified state.") of the riscv profiles specification.
+
         - const: zk
           description:
             The standard Zk Standard Scalar cryptography extension as ratified