openpower: pdbg: Enable native build

The pHAL infrastructure is expects pdbg to run as part of
the build process in order to generate the attributes database.

(From meta-openpower rev: 0b1645b540d30b5f76af19d8998a7120b1e116cd)

Change-Id: I7fe44768cabbb030d09720c38b0b38ccf30f4fb1
Signed-off-by: Ramesh Iyyar <rameshi1@in.ibm.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openpower/recipes-bsp/pdbg/pdbg_2.4.bb b/meta-openpower/recipes-bsp/pdbg/pdbg_2.4.bb
index e1651ca..08f936d 100644
--- a/meta-openpower/recipes-bsp/pdbg/pdbg_2.4.bb
+++ b/meta-openpower/recipes-bsp/pdbg/pdbg_2.4.bb
@@ -13,3 +13,5 @@
 S = "${WORKDIR}/git"
 
 inherit autotools
+
+BBCLASSEXTEND = "native"