buildgcc: fix compilation of IASL

IASL was broken when compiling without GCC.

Change-Id: Ib859ce41c1dda10181781c025fc378504f5ebb91
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/10495
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 77f2248..71107e8 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -562,8 +562,8 @@
 
 # Set up host compiler and flags needed for various OSes
 
-if [[ "$PACKAGES" == *GCC* ]]; then
 CC=cc
+if [[ "$PACKAGES" == *GCC* ]]; then
 if [ $UNAME = "Darwin" ]; then
 	#GCC_OPTIONS="$GCC_OPTIONS --enable-threads=posix"