riscv: create Kconfig architecture features for new parts

RISCV parts can be created with any one of four CPU modes enabled,
with or without PMP, and with either 32 or 64 bit XLEN.

In anticipation of parts to come, create the Kconfig variables for these
architecture attributes.

Change-Id: I32ee51b2a469c7684a2f1b477bdac040e972e253
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30348
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions