__sdivsi3_i4i and __udivsi3_i4i called for sh2 variant.

[Yoshinori Sato]

It function called to divide operator.
But libgcc.a is not include it helper functions.

This patch is included those functions.

diff -ru gcc-4.7.2.org/gcc/config.gcc gcc-4.7.2/gcc/config.gcc
--- gcc-4.7.2.org/gcc/config.gcc        2012-09-12 18:03:54.000000000 +0900
+++ gcc-4.7.2/gcc/config.gcc    2013-03-03 03:12:41.000000000 +0900
@@ -2338,7 +2338,7 @@
                sh[1234]*)      sh_multilibs=${sh_cpu_target} ;;
                sh64* | sh5*)   
sh_multilibs=m5-32media,m5-32media-nofpu,m5-compact,m5-compact-nofpu,m5-64media,m5-64media-nofpu
 ;;
                sh-superh-*)    
sh_multilibs=m4,m4-single,m4-single-only,m4-nofpu ;;
-               sh*-*-linux*)   sh_multilibs=m1,m3e,m4 ;;
+               sh*-*-linux*)   sh_multilibs=m1,m2,m3e,m4 ;;
                sh*-*-netbsd*)  sh_multilibs=m3,m3e,m4 ;;
                *) 
sh_multilibs=m1,m2,m2e,m4,m4-single,m4-single-only,m2a,m2a-single ;;
                esac
diff -ru gcc-4.7.2.org/libgcc/config/sh/lib1funcs.S 
gcc-4.7.2/libgcc/config/sh/lib1funcs.S
--- gcc-4.7.2.org/libgcc/config/sh/lib1funcs.S  2011-11-03 00:03:19.000000000 
+0900
+++ gcc-4.7.2/libgcc/config/sh/lib1funcs.S      2013-03-03 03:29:32.000000000 
+0900
@@ -3255,8 +3255,8 @@
        .word   17136
        .word   16639
 
-#elif defined (__SH3__) || defined (__SH3E__) || defined (__SH4__) || defined 
(__SH4_SINGLE__) || defined (__SH4_SINGLE_ONLY__) || defined (__SH4_NOFPU__)
-/* This code used shld, thus is not suitable for SH1 / SH2.  */
+#elif defined (__sh2__) || defined (__SH3__) || defined (__SH3E__) || defined 
(__SH4__) || defined (__SH4_SINGLE__) || defined (__SH4_SINGLE_ONLY__) || 
defined (__SH4_NOFPU__)
+/* This code used shld, thus is not suitable for SH1.  */
 
 /* Signed / unsigned division without use of FPU, optimized for SH4.
    Uses a lookup table for divisors in the range -128 .. +128, and