smarter default kernel selection

package/base/linux24/config-500.in

@@ -22,10 +22,12 @@
 
 menu_begin MENU_PKG_LINUX 'Linux Kernel Options'
         default='' ; list=''
+        kernels=$( grep KERNEL config/$config/packages | cut -d' ' -f5 | tr '\n' '|' )
         while read pkg ver ; do
                 default=${default:-$pkg} ; [ $pkg = linux24 ] && default=linux24
                 list="$list $pkg Use_${pkg}_($ver)_as_standard_Kernel"
-        done < <(grep "^X .* KERNEL " config/$config/packages | cut -f5,6 -d' ')
+        done < <(grep -E "^X .* (${kernels%|}).* " config/$config/packages | cut -f5,6 -d' ' \
+                  | sed -e 's,\([^-]*\)-[^ ]*,\1,g' | sort -u)
         if [ -z "$default" ] ; then
                 default="none" ; list="none No_Standard_Kernel"
         fi