kbuild: trivial cleanups on the comments

This is a bunch of trivial fixes and cleanups.

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile
index ec10d93..0372b33 100644
--- a/scripts/basic/Makefile
+++ b/scripts/basic/Makefile
@@ -1,5 +1,5 @@
 ###
-# Makefile.basic lists the most basic programs used during the build process.
+# This Makefile lists the most basic programs used during the build process.
 # The programs listed herein are what are needed to do the basic stuff,
 # such as fix file dependencies.
 # This initial step is needed to avoid files to be recompiled