support/dependencies/dependencies.sh: require FindBin perl package for libopenssl

Fixes:
http://autobuild.buildroot.net/results/5d1/5d10f4f545dccf126e3f5b5efce777a393c5e7bc/
http://autobuild.buildroot.net/results/7c2/7c2df31c6eb34b68e460e092d8c262bdc6c8f25a/

The configure script of (host-)libopenssl needs the FindBin perl module on the host:

Can't locate FindBin.pm in @INC (you may need to install the FindBin module)
(@INC contains: /home/buildroot/autobuild/instance-2/output-1/host/lib/perl
/usr/local/lib64/perl5/5.36 /usr/local/share/perl5/5.36
/usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5
/usr/share/perl5) at ./Configure line 15.  BEGIN failed--compilation aborted
at ./Configure line 15.

As this is needed for both libopenssl and host-libopenssl (which does not
have a corresponding config symbol in the .config), we have to require it
unconditionally.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

support/dependencies/dependencies.sh

@@ -268,6 +268,7 @@ fi
 required_perl_modules="Data::Dumper" # Needed to build host-autoconf
 required_perl_modules="$required_perl_modules ExtUtils::MakeMaker" # Used by host-libxml-parser-perl
 required_perl_modules="$required_perl_modules Thread::Queue" # Used by host-automake
+required_perl_modules="$required_perl_modules FindBin" # Used by (host-)libopenssl
 
 if grep -q ^BR2_PACKAGE_MPV=y $BR2_CONFIG ; then
     required_perl_modules="$required_perl_modules Math::BigInt"