util/scripts/ucode_h_to_bin.sh: Fix .inc-lines with just comment

There are microcodes in .inc format out in the wild which contains
lines with just a comment. So these files look like the following
example:

; External header
dd 000000001h
dd 00000001bh
...
; Data
dd 000000000h
...

The lines with just a comment starts with a ';' and will break
the current awk formatting which is performed to reformat the content
into C code style. As we are just interested in the data we can simply
drop all lines that start with a ';' which sed can do pretty easy.

Change-Id: I9ff5db51667672cffd9d776fb9497962b4a6083a
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40566
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

util/scripts/ucode_h_to_bin.sh

@@ -42,7 +42,7 @@ EOF
 
 include_file() {
 	if [ "${1: -4}" == ".inc" ]; then
-		awk '{gsub( /h.*$/, "", $2 ); print "0x" $2 ","; }' "$1" \
+		sed '/^;/d' <"$1" | awk '{gsub( /h.*$/, "", $2 ); print "0x" $2 ","; }' \
 			>> "${TMPFILE}.c"
 	else
 		echo "#include \"$1\"" >> "${TMPFILE}.c"