rootfs_ipk: error when dependencies cannot be satisfied

Per bpo#109 dependency failure during rootfs generation did not cause an error
despite that it would cause errors later on in the process. This patch updates
the key phrases searched for in the log checking function.

Signed-off-by: Joshua Lock <josh@linux.intel.com>

meta/classes/rootfs_ipk.bbclass

@@ -85,7 +85,7 @@ rootfs_ipk_log_check() {
         lf_path="$2"
 
 	lf_txt="`cat $lf_path`"
-	for keyword_die in "Cannot find package" "exit 1" ERR Fail
+	for keyword_die in "Cannot find package" "exit 1" "Cannot satisfy the following dependencies" ERR Fail
 	do				
 		if (echo "$lf_txt" | grep -v log_check | grep "$keyword_die") >/dev/null 2>&1
 		then