kernel: Move to v4.19.30-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 695b62d..83cbbbd 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 b71076cecba9..0fc730790bfa 100644
+index 72e27c379eaf..6584f8d53dad 100644
 --- a/Makefile
 +++ b/Makefile
 @@ -2,7 +2,7 @@
  VERSION = 4
  PATCHLEVEL = 19
- SUBLEVEL = 26
+ SUBLEVEL = 30
 -EXTRAVERSION =
 +EXTRAVERSION = -openpower1
  NAME = "People's Front"