buildgcc: Update Python to 3.5.1

Change-Id: I57f935b94ab0db2e9ff9434fb496d470bb4ec987
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/14463
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index fac1bb7..1e761da 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -41,7 +41,7 @@
 BINUTILS_VERSION=2.26
 GDB_VERSION=7.11
 IASL_VERSION=20160318
-PYTHON_VERSION=3.4.3
+PYTHON_VERSION=3.5.1
 EXPAT_VERSION=2.1.1
 # CLANG version number
 CLANG_VERSION=3.8.0