gdb: Further S vs. PV fixups

(From OE-Core rev: 5c9ae426a058908be2e43d249c284e122b8a5444)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gdb/gdb-cross-canadian_7.3a.bb

@@ -5,3 +5,5 @@ PR = "${INC_PR}.0"
 
 GDBPROPREFIX = "--program-prefix='${TARGET_PREFIX}'"
 EXPAT = "--with-expat"
+
+S = "${WORKDIR}/${BPN}-7.3"

meta/recipes-devtools/gdb/gdb-cross_7.3a.bb

@@ -4,3 +4,5 @@ SRC_URI += "file://sim-install-6.6.patch"
 EXPAT = "--with-expat"
 
 PR = "${INC_PR}.0"
+
+S = "${WORKDIR}/${BPN}-7.3"

meta/recipes-devtools/gdb/gdb_7.3a.bb

@@ -6,4 +6,4 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=59530bdf33659b29e73d4adb9f9f6552 \
 		    file://COPYING.LIB;md5=9f604d8a4f8e74f4f5140845a21b6674"
 PR = "${INC_PR}.0"
 
-S = "${WORKDIR}/${PN}-7.3"
+S = "${WORKDIR}/${BPN}-7.3"