drivers/intel/fsp1_1: fix linking romstage when SEPARATE_VERSTAGE used

The skylake-based Chromebooks use a separate verstage which runs
just after bootblock and prior to romstage. However, that
config is not enabled for coreboot.org so when
C_ENVIRONMENT_BOOTBLOCK changes were done it wasn't observed
that the Chromebook config failed because 2 _start symbols
were present. Remedy this failure by using the common
car_stage_entry symbol for taking over control flow.

Change-Id: I3f29b90ba8e3786b2106a34e49e6d1f9831dcc7c
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14549
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-by: Leroy P Leahy <leroy.p.leahy@intel.com>
1 file changed