buildgcc: Fix building GDB for mipsel-elf

Change-Id: I31ed159b13c0da60383068832615c6e4a9608efe
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/13849
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>

util/crossgcc/patches/gdb-7.9.1_sim-arange.patch

@@ -0,0 +1,61 @@
+From: Mike Frysinger <vapier at gentoo dot org>
+
+With newer versions of gcc (5.x), the extern inline we're using with the
+sim-arange module no longer works.  Since this code really wants the gnu
+inline semantics, use that attribute explicitly.
+
+Reported-by: DJ Delorie <dj@redhat.com>
+Reported-by: Joel Sherrill <joel.sherrill@oarcorp.com>
+
+diff -urN gdb-7.9.1.orig/sim/common/sim-arange.h gdb-7.9.1/sim/common/sim-arange.h
+--- gdb-7.9.1.orig/sim/common/sim-arange.h	2015-05-13 10:36:05.000000000 -0700
++++ gdb-7.9.1/sim/common/sim-arange.h	2016-02-27 12:22:58.090512073 -0800
+@@ -60,22 +60,26 @@
+ 				   address_word /*start*/,
+ 				   address_word /*end*/);
+ 
++/* TODO: This should get moved into sim-inline.h.  */
++#ifdef HAVE_INLINE
++#ifdef SIM_ARANGE_C
++#define SIM_ARANGE_INLINE INLINE
++#else
++#define SIM_ARANGE_INLINE EXTERN_INLINE
++#endif
++#else
++#define SIM_ARANGE_INLINE EXTERN
++#endif
++
+ /* Return non-zero if ADDR is in range AR, traversing the entire tree.
+    If no range is specified, that is defined to mean "everything".  */
+-extern INLINE int
++SIM_ARANGE_INLINE int
+ sim_addr_range_hit_p (ADDR_RANGE * /*ar*/, address_word /*addr*/);
+ #define ADDR_RANGE_HIT_P(ar, addr) \
+   ((ar)->range_tree == NULL || sim_addr_range_hit_p ((ar), (addr)))
+ 
+ #ifdef HAVE_INLINE
+-#ifdef SIM_ARANGE_C
+-#define SIM_ARANGE_INLINE INLINE
+-#else
+-#define SIM_ARANGE_INLINE EXTERN_INLINE
+-#endif
+ #include "sim-arange.c"
+-#else
+-#define SIM_ARANGE_INLINE
+ #endif
+ #define SIM_ARANGE_C_INCLUDED
+ 
+diff -urN gdb-7.9.1.orig/sim/common/sim-inline.h gdb-7.9.1/sim/common/sim-inline.h
+--- gdb-7.9.1.orig/sim/common/sim-inline.h	2015-05-13 10:36:05.000000000 -0700
++++ gdb-7.9.1/sim/common/sim-inline.h	2016-02-27 12:23:58.169085087 -0800
+@@ -303,7 +303,9 @@
+ /* ??? Temporary, pending decision to always use extern inline and do a vast
+    cleanup of inline support.  */
+ #ifndef INLINE2
+-#if defined (__GNUC__)
++#if defined (__GNUC_GNU_INLINE__) || defined (__GNUC_STDC_INLINE__)
++#define INLINE2 __inline__ __attribute__ ((__gnu_inline__))
++#elif defined (__GNUC__)
+ #define INLINE2 __inline__
+ #else
+ #define INLINE2 /*inline*/