fix gmp compile, from https://sourceware.org/cgi-bin/cvsweb.cgi/src/gas/config/tc-arm.c.diff?cvsroot=src&r1=1.550&r2=1.551

toolchain/binutils/patches/2.23.2/arm-whitespace.patch

@@ -0,0 +1,23 @@
+diff -Nur binutils-2.23.2.orig/gas/config/tc-arm.c binutils-2.23.2/gas/config/tc-arm.c
+--- binutils-2.23.2.orig/gas/config/tc-arm.c	2013-03-25 09:06:21.000000000 +0100
++++ binutils-2.23.2/gas/config/tc-arm.c	2013-09-24 13:26:32.000000000 +0200
+@@ -885,6 +885,9 @@
+ static inline int
+ skip_past_char (char ** str, char c)
+ {
++  /* PR gas/14987: Allow for whitespace before the expected character.  */
++  skip_whitespace (*str);
++
+   if (**str == c)
+     {
+       (*str)++;
+@@ -5168,6 +5171,9 @@
+       return PARSE_OPERAND_SUCCESS;
+     }
+ 
++  /* PR gas/14887: Allow for whitespace after the opening bracket.  */
++  skip_whitespace (p);
++
+   if ((reg = arm_reg_parse (&p, REG_TYPE_RN)) == FAIL)
+     {
+       inst.error = _(reg_expected_msgs[REG_TYPE_RN]);