kselftest/arm64: Add FEAT_RPRFM to the hwcap test

Since the newly added instruction is in the HINT space we can't reasonably
test for it actually being present.

Signed-off-by: Mark Brown <[e-mail]>
Reviewed-by: Catalin Marinas <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Will Deacon <[e-mail]>

tools/testing/selftests/arm64/abi/hwcap.c

···
 		.sigill_fn = rng_sigill,
 	},
 	{
+		.name = "RPRFM",
+		.at_hwcap = AT_HWCAP2,
+		.hwcap_bit = HWCAP2_RPRFM,
+		.cpuinfo = "rprfm",
+	},
+	{
 		.name = "SME",
 		.at_hwcap = AT_HWCAP2,
 		.hwcap_bit = HWCAP2_SME,