MIPS: CPS: Skip Config1 presence check

The Config1 register is architecturally defined as required, and is thus
present in all systems which may make use of cps-vec.S. Skip the check
for its presence via the Config.M bit.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11204/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/cps-vec.S

@@ -50,9 +50,7 @@
 	 * MT is not supported then branch to nomt.
 	 */
 	.macro	has_mt	dest, nomt
-	mfc0	\dest, CP0_CONFIG
-	bgez	\dest, \nomt
-	 mfc0	\dest, CP0_CONFIG, 1
+	mfc0	\dest, CP0_CONFIG, 1
 	bgez	\dest, \nomt
 	 mfc0	\dest, CP0_CONFIG, 2
 	bgez	\dest, \nomt