kernel/range: Const-ify range_contains parameters

range_contains() does not modify the range values.  David suggested it
is safer to keep those parameters as const.[1]

Make range parameters const

Link: https://lore.kernel.org/all/20241008161032.GB1609@twin.jikos.cz/

 [1]
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Link: https://patch.msgid.link/20241010-const-range-v1-1-afb6e4bfd8ce@intel.com


Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>