ichspi: Do not attempt to map physical memory for hwseq

ICH hwseq does not need to actually mmap flash, and this fails for
flash chips >16 MB, since only the top 16 MB is mapped into the address
space.

Test: Read and write flash on ICH hwseq with 32 MB flash chip.

Change-Id: Ie698071c3181e988f10b750b0e50c9700efaa1a3
Signed-off-by: Jonathon Hall <jonathon.hall@puri.sm>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/68090
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
---
M ichspi.c
1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/ichspi.c b/ichspi.c
index 7e7967e..aefbe2f 100644
--- a/ichspi.c
+++ b/ichspi.c
@@ -1794,8 +1794,6 @@
 };
 
 static const struct opaque_master opaque_master_ich_hwseq = {
-	.map_flash_region	= physmap,
-	.unmap_flash_region	= physunmap,
 	.max_data_read	= 64,
 	.max_data_write	= 64,
 	.probe		= ich_hwseq_probe,

