kbuild: clean up ${quiet} checks in shell scripts

There were efforts to make 'make -s' really silent when it is a
warning-free build.

The conventional way was to let a shell script check ${quiet}, and if
it is 'silent_', suppress the stdout by itself.

With the previous commit, the 'cmd' takes care of it now. The 'cmd' is
also invoked from if_changed, if_changed_dep, and if_changed_rule.

You can omit ${quiet} checks in shell scripts when they are invoked
from the 'cmd' macro.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/link-vmlinux.sh

@@ -38,9 +38,7 @@ LDFLAGS_vmlinux="$3"
 # Will be supressed by "make -s"
 info()
 {
-	if [ "${quiet}" != "silent_" ]; then
-		printf "  %-7s %s\n" "${1}" "${2}"
-	fi
+	printf "  %-7s %s\n" "${1}" "${2}"
 }
 
 # Generate a linker script to ensure correct ordering of initcalls.