Replace the SoC-specific `report_cache_info()` function with the
common `car_report_cache_info()` API from `car_lib`. This promotes code
reuse and reduces SoC-specific implementation for cache reporting.
BUG=none
TEST=Builds and boots successfully on google/rex platform.
Change-Id: Id5ffcab54232294ffa101f975d0ec51ac63f1910
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83482
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>