valgrind: Enable for arm after NDK r13 update

packages/valgrind/build.sh

@@ -4,9 +4,8 @@ TERMUX_PKG_VERSION=3.11.0
 TERMUX_PKG_SRCURL=http://valgrind.org/downloads/valgrind-${TERMUX_PKG_VERSION}.tar.bz2
 # TERMUX_PKG_SRCURL=https://fossies.org/linux/misc/valgrind-${TERMUX_PKG_VERSION}.tar.bz2
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="--with-tmpdir=$TERMUX_PREFIX/tmp"
-# - Does not build on arm due to https://github.com/android-ndk/ndk/issues/132 (fixed in ndk r13)
 # - Does not build on x86_64 due to lacking upstream support of that arch on android.
-TERMUX_PKG_BLACKLISTED_ARCHES="arm, x86_64"
+TERMUX_PKG_BLACKLISTED_ARCHES="x86_64"
 
 if [ "$TERMUX_ARCH" == "arm" ]; then
   # valgrind doesn't like arm; armv7 works, though.