libencode-perl: Remove buildpaths from generated .exh files

there are generated .exh files which has the absolute perl interpreter
path in comments, which is caught by build QA, therefore remove the
absolute perl native path prefix

Fixes warnings like
WARNING: libencode-perl-3.19-r0 do_package_qa: QA Issue: File /usr/src/debug/libencode-perl/3.19-r0/def_t.exh in package libencode-perl-src contains reference to TMPDIR [buildpaths]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit 8e110d9c5c)
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-perl/recipes-perl/libencode/libencode-perl_3.19.bb

@@ -21,8 +21,8 @@ UPSTREAM_CHECK_REGEX = "Encode\-(?P<pver>(\d+\.\d+))(?!_\d+).tar"
 
 S = "${WORKDIR}/Encode-${PV}"
 
+#EXTRA_CPANFLAGS:append = "PERL=../recipe-sysroot-native/usr/bin/perl-native/perl"
 inherit cpan ptest-perl
-
 do_install:prepend() {
     # Requires "-T" (taint) option on command line
     rm -rf ${B}/t/taint.t
@@ -32,6 +32,10 @@ do_install:prepend() {
     rm -rf ${B}/t/use-Encode-Alias.t
 }
 
+do_install:append() {
+    sed -i -e "s|${STAGING_BINDIR_NATIVE}/perl-native||g" ${S}/*/*.exh ${S}/*.exh
+}
+
 do_install_ptest() {
     mkdir ${D}${PTEST_PATH}/bin
     cp -r ${B}/bin/piconv ${D}${PTEST_PATH}/bin