Documentation: arm64: Correct SME ZA macros name

It should be ZA_PT_ZA*. ZA_PT_ZA_OFFSET is one example.

It is not ZA_PT_ZA_* because there is one macro ZA_PT_ZAV_OFFSET
that doesn't fit that pattern.

Fixes: 96d32e6 ("arm64/sme: Provide ABI documentation for SME")
Signed-off-by: David Spickett <david.spickett@linaro.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>

Author: DavidSpickett

Documentation/arch/arm64/sme.rst

@@ -322,7 +322,7 @@ The regset data starts with struct user_za_header, containing:
   VL is supported.
 
 * The size and layout of the payload depends on the header fields.  The
-  SME_PT_ZA_*() macros are provided to facilitate access to the data.
+  ZA_PT_ZA*() macros are provided to facilitate access to the data.
 
 * In either case, for SETREGSET it is permissible to omit the payload, in which
   case the vector length and flags are changed and PSTATE.ZA is set to 0