scsi: target: Enable READ CAPACITY for PR EARO

SBC-4, Table 13 allows READ CAPACITY for all PR types.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Link: https://lore.kernel.org/r/ad095388dbc550c5b199a1dfa71bcbfc575a7abe.1701272679.git.bcodding@redhat.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: bcodding-rh

drivers/target/target_core_pr.c

@@ -470,6 +470,7 @@ static int core_scsi3_pr_seq_non_holder(struct se_cmd *cmd, u32 pr_reg_type,
 	case INQUIRY:
 	case LOG_SENSE:
 	case SERVICE_ACTION_IN_12:
+	case READ_CAPACITY:
 	case REPORT_LUNS:
 	case REQUEST_SENSE:
 	case PERSISTENT_RESERVE_IN: