support/dependencies/dependencies.sh: require MD5 perl package for netsurf

Fix the following build failure:

Can't locate object method "hexhash" via package "MD5" at utils/git-testament.pl line 47

Fixes:
 - http://autobuild.buildroot.org/results/3dddcbbe7f6ecae5a2db6fac11fb659719452f73

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/dependencies/dependencies.sh

@@ -290,6 +290,10 @@ if grep -q ^BR2_PACKAGE_MPV=y $BR2_CONFIG ; then
     required_perl_modules="$required_perl_modules Math::BigRat"
 fi
 
+if grep -q ^BR2_PACKAGE_NETSURF=y $BR2_CONFIG ; then
+    required_perl_modules="$required_perl_modules Digest::MD5"
+fi
+
 if grep -q ^BR2_PACKAGE_WHOIS=y $BR2_CONFIG ; then
     required_perl_modules="$required_perl_modules autodie"
 fi