meta-phosphor: switch '/usr/share' to datadir

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I5cd3cf7cbec87b32ee07f08cae27b534c3cf7bd2
diff --git a/meta-phosphor/classes/license_static.bbclass b/meta-phosphor/classes/license_static.bbclass
index dd73017..8666666 100644
--- a/meta-phosphor/classes/license_static.bbclass
+++ b/meta-phosphor/classes/license_static.bbclass
@@ -15,7 +15,7 @@
 # inherit license_static
 ####
 
-STATIC_LICENSE_DIR = "${IMAGE_ROOTFS}/usr/share/www/common-licenses"
+STATIC_LICENSE_DIR = "${IMAGE_ROOTFS}${datadir}/www/common-licenses"
 
 
 def add_index_html_header(f):