android-tools: drop ${PE}, ${PR} from /usr/src/debug paths

Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-devtools/android-tools/android-tools_5.1.1.r37.bb

@@ -92,7 +92,7 @@ do_compile() {
 
     # Setting both variables below causing our makefiles to not work with
     # implicit make rules
-    CFLAGS="-ffile-prefix-map=${S}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR}"
+    CFLAGS="-ffile-prefix-map=${S}=${TARGET_DBGSRC_DIR}"
     unset CPPFLAGS
 
     export SRCDIR=${S}