patman: Move library functions into a library directory

The patman directory has a number of modules which are used by other tools
in U-Boot. This makes it hard to package the tools using pypi since the
common files must be copied along with the tool that uses them.

To address this, move these files into a new u_boot_pylib library. This
can be packaged separately and listed as a dependency of each tool.

Signed-off-by: Simon Glass <sjg@chromium.org>

tools/binman/cbfs_util.py

@@ -22,8 +22,8 @@ import sys
 
 from binman import bintool
 from binman import elf
-from patman import command
-from patman import tools
+from u_boot_pylib import command
+from u_boot_pylib import tools
 
 # Set to True to enable printing output while working
 DEBUG = False