kernel: Release Linux v4.4.92-openpower1

In particular pick up a fix in the NVMe driver:
6d1400b0 "nvme: protect against simultaneous shutdown invocations"

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
diff --git a/openpower/linux/0006-powerpc-boot-Add-OPAL-console-to-epapr-wrappers.patch b/openpower/linux/0006-powerpc-boot-Add-OPAL-console-to-epapr-wrappers.patch
index ea4917c..b900a60 100644
--- a/openpower/linux/0006-powerpc-boot-Add-OPAL-console-to-epapr-wrappers.patch
+++ b/openpower/linux/0006-powerpc-boot-Add-OPAL-console-to-epapr-wrappers.patch
@@ -19,6 +19,7 @@
 Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
 Cc: Stewart Smith <stewart@linux.vnet.ibm.com>
 Signed-off-by: Joel Stanley <joel@jms.id.au>
+Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
 ---
  arch/powerpc/boot/Makefile     |  4 +-
  arch/powerpc/boot/opal-calls.S | 58 +++++++++++++++++++++++++