test: drop whitespace after shell redirection operators

(The one case that is left unchanged is '< <(subcommand)'.)

This way, the style with no gap was already dominant. This way, the reader
immediately knows that ' < ' is a comparison operator and ' << ' is a shift.

In a few cases, replace custom EOF replacement by just EOF. There is no point
in using someting like "_EOL" unless "EOF" appears in the text.

tools/debug-sd-boot.sh

@@ -60,7 +60,7 @@ while read -r line; do
         data="${BASH_REMATCH[2]}"
         break
     fi
-done < "${2}"
+done <"${2}"
 
 if [[ -z "${text}" || -z "${data}" ]]; then
     echo "Could not determine text and data location."

tools/update-hwdb-autosuspend.sh

@@ -5,13 +5,13 @@ set -eu
 cd "${1:?}"
 
 (curl --fail -L 'https://chromium.googlesource.com/chromiumos/platform2/+/master/power_manager/udev/gen_autosuspend_rules.py?format=TEXT'; echo) \
-    | base64 -d > tools/chromiumos/gen_autosuspend_rules.py
+    | base64 -d >tools/chromiumos/gen_autosuspend_rules.py
 
-(cat <<%EOF
+(cat <<EOF
 # This file is part of systemd.
 #
 # Rules to autosuspend known fingerprint readers (pulled from libfprint).
 #
-%EOF
+EOF
 curl --fail -L 'https://gitlab.freedesktop.org/libfprint/libfprint/-/raw/master/data/autosuspend.hwdb') \
-    > hwdb.d/60-autosuspend-fingerprint-reader.hwdb
+    >hwdb.d/60-autosuspend-fingerprint-reader.hwdb