PM: hibernate: Fix up white space that does not follow coding style

Fix up white space usage that does not follow the kernel coding style
rules in several places in snapshot.c.

Signed-off-by: Darshan Rathod <darshanrathod475@gmail.com>
Link: https://patch.msgid.link/20250716124216.64329-1-darshanrathod475@gmail.com


[ rjw: New subject and changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>