Add multi-p9 support to the pdbg scripts

start_host.sh and vcs_workaround.sh need changes
to support multiple P9s.  Also bumped the pdbg
version which is coreqed with the script changes.

Change-Id: I5536b548315b5f9bf4fd4cb742c686a6ce12b6d0
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/meta-openbmc-machines/meta-openpower/common/recipes-bsp/pdbg/pdbg.bb b/meta-openbmc-machines/meta-openpower/common/recipes-bsp/pdbg/pdbg.bb
index 025aa4a..4947404 100644
--- a/meta-openbmc-machines/meta-openpower/common/recipes-bsp/pdbg/pdbg.bb
+++ b/meta-openbmc-machines/meta-openpower/common/recipes-bsp/pdbg/pdbg.bb
@@ -5,7 +5,7 @@
 
 SRC_URI += "git://github.com/open-power/pdbg.git"
 
-SRCREV = "bc861c9883bd1c40c7a284d8e4f6676b758268e5"
+SRCREV = "e4d626ed4edc3db0b850e71ca0410e343faca950"
 PV = "git${SRCREV}"
 
 S = "${WORKDIR}/git"