skiboot: Update to v6.6-338-g85df0812

Cédric Le Goater (8):
      xive/p10: Fix PC_NXC_WATCH_NXC_TYPE typo
      xive/p10: Add a retry counter when updating the cache watch
      xive/p10: Improve the check sequence on the cache watch
      xive/p10: Improve error messages for silent gather enablement
      xive/p10: Fix CPU provisioning for HW threads
      xive/p10: Reduce logging level of invalid mode at reset
      phb4/5: Finish removing P9 DD1 workaround on LSIs
      phb5: Activate StoreEOI for LSIs

Frederic Barrat (4):
      rainier: Power on PCIe slot C7
      phb5: Workaround for DD1 bug HW550351
      phb5: Add register inits specific to Gen5
      hdata/iohub: Read PCI Gen5 equalization settings for P10

Joel Stanley (1):
      rainier: Add 4U compatible

Klaus Heinrich Kiwi (2):
      external/gard: Enable Power10
      extrernal/gard: fix testcase

Mahesh Salgaonkar (2):
      core/cpu: Initialize all cpu thread areas to avoid invalid memory access.
      Add QUIRK_NO_MEM_CLEAN for simulators to avoid unnecessary memset.

Michael Neuling (1):
      phb5: Enable Gen5

Nicholas Piggin (1):
      xive/p10: Use endian safe helpers

Ryan P Grimm (13):
      Merge pull request #65 from frederic-barrat/C7
      Merge pull request #67 from clegoater/for-p10
      Merge pull request #68 from clegoater/for-p10
      Merge pull request #69 from klausk/gard_p10
      Merge pull request #70 from frederic-barrat/gen5
      Merge pull request #71 from hegdevasant/testcase-fix
      Merge pull request #72 from hegdevasant/p10-ocmb-fix
      Merge pull request #73 from hegdevasant/p10-fast-reboot
      Merge pull request #74 from mahesh-salgaonkar/p10_work
      Merge pull request #77 from hegdevasant/hdat-workaround
      Merge pull request #75 from hegdevasant/p10-hdat
      Merge pull request #76 from jmstanle/rainier-4u
      Merge pull request #78 from klausk/gard-fix-testcase

Vasant Hegde (15):
      core/test/run-trace: Fix test case
      hdata/test: Fix hdata test
      hw/test: Fix phys-map-test
      hw/ocmb: Fix log message
      hw/ocmb: Clear top bit from offset before searching addr range
      xscom-utils: Add P10 support
      core/platform: Fallback to full_reboot if fast-reboot fails
      fast-reboot: Call xive2 reset function on p10
      hdata/p10: Fix ipmi sensors
      hdata: IPL params structure update
      Partially revert "hdata/p10: Enable memory-buffer mmio"
      hdata/vpd: Add new FRU part number keyword
      hdata: Update LPC structure
      hdata: Update memory structure
      HACK: Workaround for HDAT bug

Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
diff --git a/openpower/package/skiboot/Config.in b/openpower/package/skiboot/Config.in
index 8f35b34..9f12680 100644
--- a/openpower/package/skiboot/Config.in
+++ b/openpower/package/skiboot/Config.in
@@ -31,7 +31,7 @@
 
 config BR2_SKIBOOT_VERSION
 	string
-	default "v6.6-291-gc95c8a78e" if BR2_SKIBOOT_LATEST_VERSION
+	default "v6.6-338-g85df0812" if BR2_SKIBOOT_LATEST_VERSION
 	default BR2_SKIBOOT_CUSTOM_VERSION_VALUE \
 		if BR2_SKIBOOT_CUSTOM_VERSION