binman: Fix a few file comments

Two files have the wrong comment at the top of them. Fix this.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/etype/u_boot_spl_bss_pad.py b/tools/binman/etype/u_boot_spl_bss_pad.py
index 596b2be..df15cd2 100644
--- a/tools/binman/etype/u_boot_spl_bss_pad.py
+++ b/tools/binman/etype/u_boot_spl_bss_pad.py
@@ -9,7 +9,6 @@
 
 from binman import elf
 from binman.entry import Entry
-from patman import command
 from binman.etype.blob import Entry_blob
 from patman import tools
 
diff --git a/tools/binman/etype/u_boot_spl_nodtb.py b/tools/binman/etype/u_boot_spl_nodtb.py
index 6f45293..c154cfd 100644
--- a/tools/binman/etype/u_boot_spl_nodtb.py
+++ b/tools/binman/etype/u_boot_spl_nodtb.py
@@ -2,7 +2,7 @@
 # Copyright (c) 2016 Google, Inc
 # Written by Simon Glass <sjg@chromium.org>
 #
-# Entry-type module for 'u-boot-nodtb.bin'
+# Entry-type module for 'u-boot-spl-nodtb.bin'
 #
 
 from binman.entry import Entry