Update buildroot 2018.05.1 / u-boot (#150)

* Update buildroot 2018.05.1 / u-boot

* Cleanup

* Fix bl

buildroot/package/systemd/systemd.mk

@@ -48,7 +48,8 @@ SYSTEMD_CONF_OPTS += \
 	-Dkexec-path=/usr/sbin/kexec \
 	-Dsulogin-path=/usr/sbin/sulogin \
 	-Dmount-path=/usr/bin/mount \
-	-Dumount-path=/usr/bin/umount
+	-Dumount-path=/usr/bin/umount \
+	-Dnobody-group=nogroup
 
 # disable unsupported features for non-glibc toolchains
 ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
@@ -276,6 +277,7 @@ endif
 
 ifeq ($(BR2_PACKAGE_SYSTEMD_POLKIT),y)
 SYSTEMD_CONF_OPTS += -Dpolkit=true
+SYSTEMD_DEPENDENCIES += polkit
 else
 SYSTEMD_CONF_OPTS += -Dpolkit=false
 endif