zstreamdump: include embedded writes when dumping raw data (-d)

When feeding a replication stream to `zstreamdump -d` (raw dump mode),
it does not print the raw data for DRR_WRITE_EMBEDDED records.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Signed-off-by: Allan Jude <allanjude@freebsd.org>
Closes #8430

cmd/zstreamdump/zstreamdump.c

@@ -679,6 +679,10 @@ main(int argc, char *argv[])
 			}
 			(void) ssread(buf,
 			    P2ROUNDUP(drrwe->drr_psize, 8), &zc);
+			if (dump) {
+				print_block(buf,
+				    P2ROUNDUP(drrwe->drr_psize, 8));
+			}
 			break;
 		case DRR_OBJECT_RANGE:
 			if (do_byteswap) {