openpower: pdbg: Update to latest upstream

This includes a number of bugfixes, and some new commands:

 - getcr: Get Condition Register (CR)
 - putcr: Write Condition Register (CR)
 - getxer: Get Fixed Point Exception Register (XER)
 - putxer: Write Fixed Point Exception Register (XER)

The kernel backend will detect the host type (P8 vs P9) so the user does
not need to specify it.

Change-Id: Ida2fc8dc8860304d239892d0280fc9a855b2b2f6
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/recipes-bsp/pdbg/pdbg_1.0.bb b/recipes-bsp/pdbg/pdbg_1.0.bb
index 0ad90a4..68dc01f 100644
--- a/recipes-bsp/pdbg/pdbg_1.0.bb
+++ b/recipes-bsp/pdbg/pdbg_1.0.bb
@@ -4,7 +4,7 @@
 LIC_FILES_CHKSUM = "file://${S}/COPYING;md5=3b83ef96387f14655fc854ddc3c6bd57"
 
 SRC_URI += "git://github.com/open-power/pdbg.git;branch=master"
-SRCREV = "c89010f7243e5da616bd8e361fe32c56799764d8"
+SRCREV = "2ba1e634c71404514889dd4be0a38b5a80faf760"
 
 DEPENDS += "dtc-native"