Less cat abuse

More than 90% of cats were thus terminated.
read (shell built-in) is better at reading, and dogs are better pets.

Signed-off-by: Riku Viitanen <riku.viitanen@protonmail.com>

script/build/boot/roms

@@ -31,7 +31,7 @@ set -u -e
 
 . "include/err.sh"
 
-projectname="$(cat projectname)"
+read projectname < projectname
 opts=""
 boards=
 firstoption=""

script/build/boot/roms_helper

@@ -28,7 +28,7 @@ set -u -e
 
 . "include/err.sh"
 
-projectname="$(cat projectname)"
+read projectname < projectname
 
 cfgsdir="resources/coreboot"