block: t10-pi: add MODULE_DESCRIPTION()

Fix the allmodconfig 'make W=1' issue:

WARNING: modpost: missing MODULE_DESCRIPTION() in block/t10-pi.o
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240516-md-t10-pi-v1-1-44a3469374aa@quicinc.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

block/t10-pi.c

@@ -495,5 +495,5 @@ const struct blk_integrity_profile ext_pi_type3_crc64 = {
 };
 EXPORT_SYMBOL_GPL(ext_pi_type3_crc64);
 
-MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("T10 Protection Information module");
 MODULE_LICENSE("GPL");