fix lm32 toolchain building

toolchain/gcc/patches/5.3.0/lm32-newlib-fix.patch

@@ -0,0 +1,15 @@
+Backport from gcc git
+https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=f151e2adc9c93b5d65f551f087077609821b71b7
+
+diff -Nur gcc-5.3.0.orig/gcc/config.gcc gcc-5.3.0/gcc/config.gcc
+--- gcc-5.3.0.orig/gcc/config.gcc	2015-09-10 16:17:53.000000000 +0200
++++ gcc-5.3.0/gcc/config.gcc	2016-04-02 19:51:24.771406949 +0200
+@@ -1805,7 +1805,7 @@
+         md_file=iq2000/iq2000.md
+         ;;
+ lm32-*-elf*)
+-        tm_file="dbxelf.h elfos.h ${tm_file}"
++        tm_file="dbxelf.h elfos.h ${tm_file} newlib-stdint.h"
+ 	tmake_file="${tmake_file} lm32/t-lm32"
+         ;;
+ lm32-*-rtems*)