sys-process/audit: Fix arm64 runtime errors

The --with-arm and --with-aarch64 configure script options need to be
set when building for the arm64-usr target.

Fixes runtime errors like these when adding machine/arch specific rules:

    # auditctl -a exit,always -S fchmod
    Error detecting machine type

    # auditctl -a exit,always -F arch=aarch64 -S fchmod
    arch elf mapping not found

Signed-off-by: Geoff Levand <geoff@infradead.org>

Author: glevand

sys-process/audit/audit-2.7.1.ebuild

@@ -86,7 +86,14 @@ src_prepare() {
 
 multilib_src_configure() {
 	local ECONF_SOURCE=${S}
+	local extra_conf
+
+	if [[ "${ARCH}" == "arm64" ]]; then
+		extra_conf="--with-arm --with-aarch64"
+	fi
+
 	econf \
+		${extra_conf} \
 		--sbindir="${EPREFIX}/sbin" \
 		$(use_enable gssapi gssapi-krb5) \
 		$(use_enable static-libs static) \