drivers/firmware/memmap.c: pass the correct argument to firmware_map_find_entry_bootmem()

drivers/firmware/memmap.c: pass the correct argument to firmware_map_find_entry_bootmem()

firmware_map_add_hotplug() calls firmware_map_find_entry_bootmem() to
get free firmware_map_entry.  But end arguments is not correct.  So
firmware_map_find_entry_bootmem() cannot not find firmware_map_entry.

The patch passes the correct end argument to firmware_map_find_entry_bootmem().

Signed-off-by: Yasuaki Ishimatsu <[email protected]>
Cc: Santosh Shilimkar <[email protected]>
Cc: Toshi Kani <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>