Add a patch to allow arm-none-eabi-gcc492 to build natively on arm systems.

Without this change the port builds fine as a cross-compiler but fails to
build natively on an arm system.

Patch submitted by Tim Kientzle, who pointed out it was used in the original
powerpc64-gcc port this one was derived from.

PR:		205673
PR:		204419
Approved by:	mat (mentor)

devel/arm-none-eabi-gcc492/Makefile

@@ -2,7 +2,7 @@
 
 PORTNAME=	gcc
 PORTVERSION=	4.9.2
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	devel
 MASTER_SITES=	GCC/releases/gcc-${DISTVERSION}
 PKGNAMEPREFIX?=	arm-none-eabi-

devel/arm-none-eabi-gcc492/files/patch-gcc_config.host

@@ -0,0 +1,11 @@
+--- gcc/config.host.orig	2014-01-02 22:23:26 UTC
++++ gcc/config.host
+@@ -99,7 +99,7 @@ case ${host} in
+ esac
+ 
+ case ${host} in
+-  arm*-*-linux*)
++  arm*-*-*)
+     case ${target} in
+       arm*-*-*)
+ 	host_extra_gcc_objs="driver-arm.o"