block/floppy: Fix a sparse warning

Since the type of request.cmd_flags has been changed from u32 into
blk_opf_t, use the __force keyword when casting to an integer type to
prevent that sparse warns about this cast.

Cc: Denis Efremov <[e-mail]>
Cc: Willy Tarreau <[e-mail]>
Signed-off-by: Bart Van Assche <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jens Axboe <[e-mail]>

drivers/block/floppy.c

···
 	if (WARN(atomic_read(&usage_count) == 0,
 		 "warning: usage count=0, current_req=%p sect=%ld flags=%llx\n",
 		 current_req, (long)blk_rq_pos(current_req),
-		 (unsigned long long) current_req->cmd_flags))
+		 (__force unsigned long long) current_req->cmd_flags))
 		return BLK_STS_IOERR;
 
 	if (test_and_set_bit(0, &fdc_busy)) {