staging: gpib: fix kernel-doc section for usb_gpib_line_status() function

The function name field in the kernel-doc section for the
usb_gpib_line_status() is defined as 'line_status'. In addition, after
the kernel-doc section, there are three macro definition instead of the
function definition.

These issues trigger the warning:

warning: expecting prototype for line_status(). Prototype was for WQT()
instead.

Fix the warning by renaming the function in the kernel-doc section and
by moving the macros to the beginning of the file with the rest of
macros definition.

Signed-off-by: Gaston Gonzalez <gascoar@gmail.com>
Link: https://lore.kernel.org/r/20250305193614.39604-7-gascoar@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>