preinit-mounts: Fix dependencies

preinit-mounts is a shell script.  Add appropriate dependencies.

Change-Id: Idb8d44c23fe73638e40d0394e44c6db3bf5ba011
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Tested: Built and validated a witherspoon image
diff --git a/common/recipes-phosphor/preinit-mounts/preinit-mounts.bb b/common/recipes-phosphor/preinit-mounts/preinit-mounts.bb
index 282f863..30e0f36 100644
--- a/common/recipes-phosphor/preinit-mounts/preinit-mounts.bb
+++ b/common/recipes-phosphor/preinit-mounts/preinit-mounts.bb
@@ -1,6 +1,9 @@
 inherit obmc-phosphor-license
+inherit allarch
 inherit update-alternatives
 
+RDEPENDS_${PN} += "${VIRTUAL-RUNTIME_base-utils}"
+
 SRC_URI += "file://init"
 
 FILES_${PN} += "${base_sbindir}/init"