skiboot 5.9-rc4

Michael Neuling (1):
      phb4: Fix PCIe GEN4 on DD2.1 and above

Nicholas Piggin (1):
      core/direct-controls: increase special wakeup timeout on POWER9

Shilpasri G Bhat (2):
      core: direct-controls: Fix clearing of special wakeup
      occ-sensors : Add OCC inband sensor region to exports

Stewart Smith (1):
      skiboot 5.9-rc4 release notes

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/openpower/package/skiboot/Config.in b/openpower/package/skiboot/Config.in
index d9c1dd8..70a800d 100644
--- a/openpower/package/skiboot/Config.in
+++ b/openpower/package/skiboot/Config.in
@@ -31,7 +31,7 @@
 
 config BR2_SKIBOOT_VERSION
 	string
-	default "v5.9-rc3" if BR2_SKIBOOT_LATEST_VERSION
+	default "v5.9-rc4" if BR2_SKIBOOT_LATEST_VERSION
 	default BR2_SKIBOOT_CUSTOM_VERSION_VALUE \
 		if BR2_SKIBOOT_CUSTOM_VERSION