kernel: Move to Linux v5.3.16-openpower1

PowerPC releated changes:

 powerpc/bpf: Fix tail call implementation
 powerpc/book3s64: Fix link stack flush on context switch
 powerpc/64s: support nospectre_v2 cmdline option
 powerpc/powernv: Fix CPU idle to be called with IRQs disabled

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/0001-xhci-Reset-controller-on-xhci-shutdown.patch b/openpower/linux/0001-xhci-Reset-controller-on-xhci-shutdown.patch
index a911fe6..b5be46b 100644
--- a/openpower/linux/0001-xhci-Reset-controller-on-xhci-shutdown.patch
+++ b/openpower/linux/0001-xhci-Reset-controller-on-xhci-shutdown.patch
@@ -14,7 +14,7 @@
  1 file changed, 1 insertion(+)
 
 diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
-index ee9d2e0fc53a..e2ced6c34620 100644
+index 270e45058272..2f21be5d8f32 100644
 --- a/drivers/usb/host/xhci.c
 +++ b/drivers/usb/host/xhci.c
 @@ -793,6 +793,7 @@ static void xhci_shutdown(struct usb_hcd *hcd)