kernel: Move to Linux v5.4.7-openpower1

This picks up a buildroot commit to support Linux 5.4.

Drop the firmware assisted dump (FAdump) patches as they are now
merged upstream. Also drop the lpfc fixes as they are upsteam too.

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/0004-Release-OpenPower-kernel.patch b/openpower/linux/0004-Release-OpenPower-kernel.patch
new file mode 100644
index 0000000..5e40910
--- /dev/null
+++ b/openpower/linux/0004-Release-OpenPower-kernel.patch
@@ -0,0 +1,23 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Joel Stanley <joel@jms.id.au>
+Date: Tue, 16 Jul 2019 11:40:02 +0930
+Subject: [PATCH 4/4] Release OpenPower kernel
+
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 0e2e0a034064..a23214c8627b 100644
+--- a/Makefile
++++ b/Makefile
+@@ -2,7 +2,7 @@
+ VERSION = 5
+ PATCHLEVEL = 4
+ SUBLEVEL = 7
+-EXTRAVERSION =
++EXTRAVERSION = -openpower1
+ NAME = Kleptomaniac Octopus
+ 
+ # *DOCUMENTATION*