arm64: ptrace: Use ARM64_SME to guard the SME register enumerations

We currently guard REGSET_{SSVE, ZA} using ARM64_SVE for no good reason.
Both enumerations would be pointless without ARM64_SME and create two empty
entries in aarch64_regsets[] which would then become part of a process's
native regset view (they should be ignored though).

Switch to use ARM64_SME instead.

Fixes: e12310a0d30f ("arm64/sme: Implement ptrace support for streaming mode SVE registers")
Signed-off-by: Zenghui Yu <[e-mail]>
Reviewed-by: Mark Brown <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Will Deacon <[e-mail]>

arch/arm64/kernel/ptrace.c

···
 #ifdef CONFIG_ARM64_SVE
 	REGSET_SVE,
 #endif
-#ifdef CONFIG_ARM64_SVE
+#ifdef CONFIG_ARM64_SME
 	REGSET_SSVE,
 	REGSET_ZA,
 #endif