Add skiboot-5.1.6 release notes

Signed-off-by: Stewart Smith <[email protected]>

doc/release-notes/skiboot-5.1.6.txt

@@ -0,0 +1,31 @@
+skiboot-5.1.6
+-------------
+
+skiboot-5.1.6 was released on October 8th, 2015.
+
+skiboot-5.1.6 is the 7th stable release of 5.1, it follows skiboot-5.1.5
+(which was released October 1st, 2015).
+
+Skiboot 5.1.6 contains all fixes from skiboot-5.1.5 and is a minor bug
+fix release.
+
+Over skiboot-5.1.5, we have the following changes:
+
+Generic:
+- Ensure we run pollers in cpu_wait_job()
+
+  In root causing a bug on AST BMC Alistair found that pollers weren't
+  being run for around 3800ms.
+
+  This could show as not resetting the boot count sensor on successful
+  boot.
+
+AST BMC Machines:
+- hw/bt.c: Check for timeout after checking for message response
+
+  When deciding if a BT message has timed out we should first check for
+  a message response. This will ensure that messages will not time out
+  if there was a delay calling the pollers.
+
+  This could show as not resetting the boot count sensor on successful
+  boot.