net-snmp: fix QA Issue after LDFLAGS change

Adding -f*-prefix-map to LDFLAGS caused the following issue:

QA Issue: netsnmp-agent.pc failed sanity test (tmpdir)

Fix by filtering out -f*-prefix-map from *.pc files.

[YOCTO #14481]

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit 5e042ac207)
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-networking/recipes-protocols/net-snmp/net-snmp_5.9.1.bb

@@ -131,6 +131,11 @@ do_install_append() {
         -e 's@[^ ]*PKG_CONFIG_LIBDIR=[^ "]*@@g' \
         -i ${D}${bindir}/net-snmp-config
 
+    sed -e 's@[^ ]*-ffile-prefix-map=[^ "]*@@g' \
+        -e 's@[^ ]*-fdebug-prefix-map=[^ "]*@@g' \
+        -e 's@[^ ]*-fmacro-prefix-map=[^ "]*@@g' \
+        -i ${D}${libdir}/pkgconfig/netsnmp*.pc
+
     # ${STAGING_DIR_HOST} is empty for native builds, and the sed command below
     # will result in errors if run for native.
     if [ "${STAGING_DIR_HOST}" ]; then