package/perl-sys-cpu: add an upstream URL to Config.in

Add an upstream URL to the help text in Config.in. This
addresses the 'Missing' URL status in the package stats
web page output.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/perl-sys-cpu/Config.in

@@ -5,5 +5,7 @@ config BR2_PACKAGE_PERL_SYS_CPU
 	  Perl module for getting information about the system CPU
 	  (Sys::CPU).
 
+	  http://search.cpan.org/dist/Sys-CPU/
+
 comment "perl-sys-cpu needs a toolchain w/ dynamic library"
 	depends on BR2_STATIC_LIBS