kselftest/arm64: Fix encoding for SVE B16B16 test

The test for SVE_B16B16 had a cut'n'paste of a SME instruction, fix it with
a relevant SVE instruction.

Fixes: 44d10c2 ("kselftest/arm64: Add 2023 DPISA hwcap test coverage")
Signed-off-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>

Author: broonie

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

@@ -361,8 +361,8 @@ static void sveaes_sigill(void)
 
 static void sveb16b16_sigill(void)
 {
-	/* BFADD ZA.H[W0, 0], {Z0.H-Z1.H} */
-	asm volatile(".inst 0xC1E41C00" : : : );
+	/* BFADD Z0.H, Z0.H, Z0.H */
+	asm volatile(".inst 0x65000000" : : : );
 }
 
 static void svepmull_sigill(void)