[PATCH v2 3/4] docs: riscv: Document hwprobe for Zicbop

[Yao Zihong]

Update hwprobe.rst to include documentation of the new
:c:macro:`RISCV_HWPROBE_EXT_ZICBOP` and
:c:macro:`RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE`, following the same
style as the Zicbom and Zicboz entries.

The extension bit records support for the Zicbop extension, and
the block size key reports the block size in bytes.

Signed-off-by: Yao Zihong <zihong.plct at isrc.iscas.ac.cn>
---
 Documentation/arch/riscv/hwprobe.rst | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
index 2f449c9b15bd..3b9c9d7e1409 100644
--- a/Documentation/arch/riscv/hwprobe.rst
+++ b/Documentation/arch/riscv/hwprobe.rst
@@ -275,6 +275,9 @@ The following keys are defined:
        ratified in commit 49f49c842ff9 ("Update to Rafified state") of
        riscv-zabha.
 
+  * :c:macro:`RISCV_HWPROBE_EXT_ZICBOP`: The Zicbop extension is supported, as
+       ratified in commit 3dd606f ("Create cmobase-v1.0.pdf") of riscv-CMOs.
+
 * :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: Deprecated.  Returns similar values to
      :c:macro:`RISCV_HWPROBE_KEY_MISALIGNED_SCALAR_PERF`, but the key was
      mistakenly classified as a bitmask rather than a value.
@@ -369,4 +372,7 @@ The following keys are defined:
 
     * :c:macro:`RISCV_HWPROBE_VENDOR_EXT_XSFVFWMACCQQQ`: The Xsfvfwmaccqqq
         vendor extension is supported in version 1.0 of Matrix Multiply Accumulate
-	Instruction Extensions Specification.
\ No newline at end of file
+	Instruction Extensions Specification.
+
+* :c:macro:`RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE`: An unsigned int which
+  represents the size of the Zicbop block in bytes.
\ No newline at end of file
-- 
2.47.2