musl: fix toolchain build failure caused by some header changes

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 41173

toolchain/musl/include/features.h

@@ -48,7 +48,7 @@
 #define __GNU_LIBRARY__ 6
 
 #define __GLIBC__ 2
-#define __GLIBC_MINOR__ 16
+#define __GLIBC_MINOR__ 2
 #endif
 
 #include <sys/glibc-types.h>

toolchain/musl/include/sys/glibc-types.h

 #ifndef __MUSL_GLIBC_TYPES_H
 #define __MUSL_GLIBC_TYPES_H
 
+#include <sys/cdefs.h>
+
 /* Convenience types.  */
 typedef unsigned char __u_char;
 typedef unsigned short int __u_short;
@@ -25,5 +27,6 @@ __extension__ typedef unsigned long long int __uint64_t;
 #define __off64_t off_t
 #define __loff_t off_t
 typedef char *__caddr_t;
+#define __locale_t locale_t
 
 #endif