perl: correct libpth and glibpth

Previouly there is a logic as below used to set libpth in config.sh.
libpth='@LIBDIR@ @BASELIBDIR@'

But after the below commits introduced, the above logic is dropped.
52f2828314 perl: add a version that builds the recipe using perl-cross, and update to 5.28.1
68552c3532 perl: remove the previous version of the recipe

So correct the value of libpth and glibpth to add the dropped logic
back to avoid confusing.

Before the patch(on 64bits system):
 # perl -V:libpth
 libpth='/usr/lib /lib';

After the patch(on 64bits system):
 # perl -V:libpth
 libpth='/usr/lib64 /lib64';

(From OE-Core rev: a494de43c3ccdcf7af988765ae5c3a95bc20c567)

Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/perl/perl_5.34.0.bb

@@ -53,6 +53,8 @@ do_configure_class-target() {
     -Dsoname=libperl.so.5 \
     -Dvendorprefix=${prefix} \
     -Darchlibexp=${STAGING_LIBDIR}/perl5/${PV}/${TARGET_ARCH}-linux \
+    -Dlibpth='${libdir} ${base_libdir}' \
+    -Dglibpth='${libdir} ${base_libdir}' \
     ${PACKAGECONFIG_CONFARGS}
 
     #perl.c uses an ARCHLIB_EXP define to generate compile-time code that