[PATCH 3/4] docs/arm64: elf_hwcaps: Document HWCAP_SB

[Julien Grall <julien.grall@xxxxxxx>]

All the hardware capabilities but HWCAP_SB is not documented in
elf_hwcaps.rst. So document it.

Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
---
 Documentation/arm64/elf_hwcaps.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/arm64/elf_hwcaps.rst b/Documentation/arm64/elf_hwcaps.rst
index 9ee7f8ff1fae..7fa3d215ae6a 100644
--- a/Documentation/arm64/elf_hwcaps.rst
+++ b/Documentation/arm64/elf_hwcaps.rst
@@ -155,6 +155,9 @@ HWCAP_FLAGM
 HWCAP_SSBS
     Functionality implied by ID_AA64PFR1_EL1.SSBS == 0b0010.
 
+HWCAP_SB
+    Functionality implied by ID_AA64ISAR1_EL1.SB == 0b0001.
+
 HWCAP_PACA
     Functionality implied by ID_AA64ISAR1_EL1.APA == 0b0001 or
     ID_AA64ISAR1_EL1.API == 0b0001, as described by
-- 
2.11.0