staging: most: rename enum mbo_status_flags

staging: most: rename enum mbo_status_flags

The data structures of the most.h header file will be exposed
to the kernel once the file is moved out of the staging area.
This is why the name is prefixed with the string 'most'.

Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Link: https://lore.kernel.org/r/1576238662-16512-4-git-send-email-christian.gromm@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>