openpower: pdbg: Bump version to v3.6

gdbserver improvements:

 - Power9 and Power10 support
 - Multi thread debugging support
 - Updates to parser

libpdbg changes:

 - Remove attn API, it was unused and is now part of the gdbserver
 - Change behaviour of sbe_get_state to suit phal consumer
 - Fix thread_stop
 - Remove printing from thread_regs functions

Signed-off-by: Joel Stanley <joel@jms.id.au>
Change-Id: I5101cbd6df3c92fc11ea323f8ae6db4d18ddb5cf
diff --git a/meta-openpower/recipes-bsp/pdbg/pdbg_3.5.bb b/meta-openpower/recipes-bsp/pdbg/pdbg_3.6.bb
similarity index 88%
rename from meta-openpower/recipes-bsp/pdbg/pdbg_3.5.bb
rename to meta-openpower/recipes-bsp/pdbg/pdbg_3.6.bb
index f881263..d0788b9 100644
--- a/meta-openpower/recipes-bsp/pdbg/pdbg_3.5.bb
+++ b/meta-openpower/recipes-bsp/pdbg/pdbg_3.6.bb
@@ -4,7 +4,7 @@
 LIC_FILES_CHKSUM = "file://${S}/COPYING;md5=3b83ef96387f14655fc854ddc3c6bd57"
 
 SRC_URI += "git://github.com/open-power/pdbg.git;branch=master;protocol=https"
-SRCREV = "7bad99f2aca4df01aa0833b1eab16a7c639d5212"
+SRCREV = "3a21a79267bc5faa9e4bc56dc3124be610e9d475"
 
 DEPENDS += "dtc-native"