gitignore: ignore the crossgcc/build-{arch}-{archive}

The architecture information has been added to the folders to
build archives for crossgcc. We need to change the .gitignore
to keep ignoring them.

Change-Id: Ic18685e507f1b09088120eee6047d49141e29906
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/4513
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/.gitignore b/.gitignore
index 1fe961b..0ad15ef 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,15 +8,15 @@
 payloads/external/SeaBIOS/seabios/
 util/crossgcc/acpica-unix-*/
 util/crossgcc/binutils-*/
-util/crossgcc/build-binutils/
-util/crossgcc/build-expat/
-util/crossgcc/build-gcc/
-util/crossgcc/build-gdb/
-util/crossgcc/build-gmp/
-util/crossgcc/build-libelf/
-util/crossgcc/build-mpc/
-util/crossgcc/build-mpfr/
-util/crossgcc/build-python/
+util/crossgcc/build-*binutils/
+util/crossgcc/build-*expat/
+util/crossgcc/build-*gcc/
+util/crossgcc/build-*gdb/
+util/crossgcc/build-*gmp/
+util/crossgcc/build-*libelf/
+util/crossgcc/build-*mpc/
+util/crossgcc/build-*mpfr/
+util/crossgcc/build-*python/
 util/crossgcc/expat-*/
 util/crossgcc/gcc-*/
 util/crossgcc/gdb-*/