Update buildroot to 2015.05 base

Adds petitboot to openpower overlay rather rather than in buildroot branch.

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/openpower/package/petitboot/petitboot-console-ui.rules b/openpower/package/petitboot/petitboot-console-ui.rules
new file mode 100644
index 0000000..7464856
--- /dev/null
+++ b/openpower/package/petitboot/petitboot-console-ui.rules
@@ -0,0 +1,5 @@
+
+# spawn a petitboot UI on common user-visible interface devices
+SUBSYSTEM=="tty", KERNEL=="hvc*", RUN+="/usr/libexec/petitboot/pb-console --getty --detach -- -n -i 0 $name vt100"
+SUBSYSTEM=="tty", KERNEL=="tty0", RUN+="/usr/libexec/petitboot/pb-console --getty --detach -- -n -i 0 $name vt100"
+SUBSYSTEM=="tty", KERNEL=="ttyS*", RUN+="/usr/libexec/petitboot/pb-console --getty --detach -- -n -i 0 $name vt100"