qcacld-3.0: Abstract SDIO block size

Do not tie up names with mailbox.
This results from SDIO HIF refactoring.
See qcacmn: I12bdf8b07350411093ba35071411525a8333cf93

Change-Id: I99184fbfc95a601f09dba5891098c35d5aa794c5
CRs-Fixed: 2252448

core/bmi/src/ol_fw_common.c

@@ -103,7 +103,7 @@ QDF_STATUS ol_sdio_extra_initialization(struct ol_context *ol_ctx)
 
 	/* get the block sizes */
 	status = hif_get_config_item(scn,
-				HIF_DEVICE_GET_MBOX_BLOCK_SIZE,
+				HIF_DEVICE_GET_BLOCK_SIZE,
 				blocksizes, sizeof(blocksizes));
 	if (status != EOK) {
 		BMI_ERR("Failed to get block size info from HIF layer");