dummyflasher.c: Factor out global state

Moves global state into spi_master data.

BUGS=b:140394053

Change-Id: I972b085875f1277d9ff33326669d2676a3bcd3aa
Signed-off-by: Lachlan Bishop <lxb@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/45230
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
1 file changed