xtensa: display s32c1i feature flag in cpuinfo

Signed-off-by: NMax Filippov <jcmvbkbc@gmail.com>
Signed-off-by: NChris Zankel <chris@zankel.net>

arch/xtensa/kernel/setup.c

@@ -380,6 +380,9 @@ c_show(struct seq_file *f, void *slot)
 #endif
 #if XCHAL_HAVE_FP
 		     "fpu "
+#endif
+#if XCHAL_HAVE_S32C1I
+		     "s32c1i "
 #endif
 		     "\n");