toolchain/gcc/4.3.2: fix arm funroll-loops patch from r24993

Rename it so it actually gets applied and fix it so it can be applied
(-p level).

toolchain/gcc/4.3.2/306-arm-funroll-loops.patch.arm → toolchain/gcc/4.3.2/306-arm-funroll-loops.patch

@@ -7,8 +7,8 @@ ChangeLog (regrename)
 
 Index: gcc/regrename.c
 ===================================================================
---- gcc/regrename.c	(revision 197947)
-+++ gcc/regrename.c	(working copy)
+--- a/gcc/regrename.c	(revision 197947)
++++ b/gcc/regrename.c	(working copy)
 @@ -783,6 +783,10 @@ build_def_use (basic_block bb)
  		recog_data.operand_type[i] = OP_INOUT;
  	    }