crossgcc: Use acpica-unix2 over acpica-unix

Apparently acpica-unix is shipped under
"A non-open source license (the 'Intel license')" while acpica-unix2
comes under GPLv2/BSD dual license. (see https://acpica.org/Licensing)

So go with unix2.

Change-Id: I412812187bbf488eb4ad6d7fb8d2840f2f5e06d4
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/13686
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 9652496..3f41f98 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -54,7 +54,7 @@
 GCC_ARCHIVE="http://ftpmirror.gnu.org/gcc/gcc-${GCC_VERSION}/gcc-${GCC_VERSION}.tar.bz2"
 BINUTILS_ARCHIVE="http://ftpmirror.gnu.org/binutils/binutils-${BINUTILS_VERSION}.tar.bz2"
 GDB_ARCHIVE="http://ftpmirror.gnu.org/gdb/gdb-${GDB_VERSION}.tar.xz"
-IASL_ARCHIVE="https://acpica.org/sites/acpica/files/acpica-unix-${IASL_VERSION}.tar.gz"
+IASL_ARCHIVE="https://acpica.org/sites/acpica/files/acpica-unix2-${IASL_VERSION}.tar.gz"
 PYTHON_ARCHIVE="http://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tar.xz"
 EXPAT_ARCHIVE="http://downloads.sourceforge.net/sourceforge/expat/expat-${EXPAT_VERSION}.tar.gz"
 # CLANG toolchain archive locations
@@ -72,7 +72,7 @@
 GCC_DIR="gcc-${GCC_VERSION}"
 BINUTILS_DIR="binutils-${BINUTILS_VERSION}"
 GDB_DIR="gdb-${GDB_VERSION}"
-IASL_DIR="acpica-unix-${IASL_VERSION}"
+IASL_DIR="acpica-unix2-${IASL_VERSION}"
 PYTHON_DIR="Python-${PYTHON_VERSION}"
 EXPAT_DIR="expat-${EXPAT_VERSION}"
 # CLANG toolchain directories