Ports: patch config.sub instead of the configure script in the yasm port

Ports/yasm/patches/config.sub.patch

@@ -0,0 +1,29 @@
+--- yasm-1.3.0/config/original-config.sub 2021-04-13 19:32:43.345360128 +0100
++++ yasm-1.3.0/config/config.sub 2021-04-13 19:33:00.992081544 +0100
+@@ -156,7 +156,7 @@
+ -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
+ -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
+ -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
+- -apple | -axis | -knuth | -cray | -microblaze)
++ -apple | -axis | -knuth | -cray | -microblaze | serenity*)
+ os=
+ basic_machine=$1
+ ;;
+@@ -1368,7 +1368,7 @@
+ | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+ | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+ | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+- | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es*)
++ | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* | serenity*)
+ # Remember, each alternative MUST END IN *, to match a version number.
+ ;;
+ -qnx*)
+@@ -1505,6 +1505,8 @@
+ ;;
+ -none)
+ ;;
++ -serenity*)
++ ;;
+ *)
+ # Get rid of the `-' at the beginning of $os.
+ os=`echo $os | sed 's/[^-]*-//'`