dediprog.c: Fix layering violation of default_spi_read

default_spi_read() calls spi_read_chunked() with the correct
max_read value of 16 set in the spi master struct.

Change-Id: Ic0897f74056e3d723a33c063ed0bd8cb6e88ba45
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/46232
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Original-Reviewed-by: Sam McNally <sammc@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/71326
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/dediprog.c b/dediprog.c
index e735ee2..c05a54b 100644
--- a/dediprog.c
+++ b/dediprog.c
@@ -545,7 +545,7 @@
 	if (residue) {
 		msg_pdbg("Slow read for partial block from 0x%x, length 0x%x\n",
 			 start, residue);
-		ret = spi_read_chunked(flash, buf, start, residue, 16);
+		ret = default_spi_read(flash, buf, start, residue);
 		if (ret)
 			goto err;
 	}
@@ -560,8 +560,8 @@
 	if (len != 0) {
 		msg_pdbg("Slow read for partial block from 0x%x, length 0x%x\n",
 			 start, len);
-		ret = spi_read_chunked(flash, buf + residue + bulklen,
-				       start + residue + bulklen, len, 16);
+		ret = default_spi_read(flash, buf + residue + bulklen,
+				       start + residue + bulklen, len);
 		if (ret)
 			goto err;
 	}