soc/intel/tigerlake: Fix FSP SPD index for DDR4

For DDR4, FSP expects channel 0 to set SPD for index 0 and channel 1
to set SPD for index 4. This change adds a helper macro to translate
DDR4 channel # to the index # that the FSP expects.

BUG=b:154445630
TEST=Verified that memory initialization for DDR4 is successful.

Change-Id: I2b6ea2433453a574970c1c33ff629fd54ff5d508
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40588
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kane Chen <kane.chen@intel.com>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>

0 files changed, 0 insertions, 0 deletions