Skiboot: bump to latest master-p10

Changes:

Cédric Le Goater (5):
      xive/p10: improve cache watch type checking
      xive/p10: Fix silent/gather setting for KVM escalation
      occ: Fix P10 Support
      psi/p10: introduce a xive2_source_mask()
      psi: Mask all sources at init

Signed-off-by: Klaus Heinrich Kiwi <klaus@linux.vnet.ibm.com>
diff --git a/openpower/configs/rainier_defconfig b/openpower/configs/rainier_defconfig
index 1393f6e..5d9a782 100644
--- a/openpower/configs/rainier_defconfig
+++ b/openpower/configs/rainier_defconfig
@@ -25,7 +25,7 @@
 BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
 BR2_PACKAGE_SKIBOOT=y
 BR2_SKIBOOT_CUSTOM_VERSION=y
-BR2_SKIBOOT_CUSTOM_VERSION_VALUE="ad969e9b599e38c6eca39b5bd4fb7db0eea7e13d"
+BR2_SKIBOOT_CUSTOM_VERSION_VALUE="99ce9ff31dc13da99936754232189ac5db71d061"
 BR2_SKIBOOT_CUSTOM_GIT=y
 BR2_SKIBOOT_CUSTOM_REPO_URL="git@github.ibm.com:p10/skiboot.git"
 BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/busybox.fragment"