xtensa: enable sorting extable at build time

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: David Daney <ddaney.cavm@gmail.com>
diff --git a/scripts/sortextable.c b/scripts/sortextable.c
index cc49062..1052d48 100644
--- a/scripts/sortextable.c
+++ b/scripts/sortextable.c
@@ -35,6 +35,10 @@
 #define EM_ARCOMPACT	93
 #endif
 
+#ifndef EM_XTENSA
+#define EM_XTENSA	94
+#endif
+
 #ifndef EM_AARCH64
 #define EM_AARCH64	183
 #endif
@@ -281,6 +285,7 @@
 	case EM_AARCH64:
 	case EM_MICROBLAZE:
 	case EM_MIPS:
+	case EM_XTENSA:
 		break;
 	}  /* end switch */