kernel: Move to Linux v4.13.2-openpower1

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/0002-Release-OpenPower-kernel.patch b/openpower/linux/0002-Release-OpenPower-kernel.patch
index 88b5f02..071161b 100644
--- a/openpower/linux/0002-Release-OpenPower-kernel.patch
+++ b/openpower/linux/0002-Release-OpenPower-kernel.patch
@@ -9,13 +9,13 @@
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/Makefile b/Makefile
-index ed65d7278bb3..d3f3341e8f0b 100644
+index 8aad6bc50d52..2ab5bcdfe63a 100644
 --- a/Makefile
 +++ b/Makefile
 @@ -1,7 +1,7 @@
  VERSION = 4
  PATCHLEVEL = 13
- SUBLEVEL = 0
+ SUBLEVEL = 2
 -EXTRAVERSION =
 +EXTRAVERSION = -openpower1
  NAME = Fearless Coyote