flash_fp_mcu: Fix FPMCU flashing on Nami (14375.0.0 and later)
flash_fp_mcu: Fix FPMCU flashing on Nami (14375.0.0 and later)

Starting from R98-14375.0.0 the default overlay for Nami switched
from 4.4 kernel to 5.4 kernel
(https://chrome-internal-review.googlesource.com/c/4237358).

Update DEVICE constant in nami config script to /dev/spidev1.0 which is
correct value for 5.4 kernel.

BUG=b:208680160 b:210526861
BRANCH=none
TEST=Run 'flash_fp_mcu --noservices' on board from Nami family

Signed-off-by: Patryk Duda <6aed17a362577cf10cb5675888c1635d522769c1@semihalf.com>
Change-Id: I3f819c4a6fb291fd4308a9895590446e9de1ab31
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3358575
Reviewed-by: Josie Nordrum <15709ebcc9b54f095b12491b186117e19e6ed974@google.com>
Commit-Queue: Josie Nordrum <15709ebcc9b54f095b12491b186117e19e6ed974@google.com>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec