UPSTREAM: vboot: Add mock functions for recovery space read/write

For the boards that intend to use mock tpm and have recovery mrc cache
support enabled, provide mock functions to read and write mrc hash
space.

Reading MRC hash space returns TPM_SUCCESS as later checks take care of
comparing the hash value and retraining if hash comparison fails. Thus,
in case of mock tpm, device would always end up doing the memory
retraining in recovery mode.

BUG=chrome-os-partner:62413
BRANCH=None
TEST=Verified that eve builds with mock tpm selected.

Change-Id: Ib946ea2044a64286495a20a285ae5200702c24c9
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 775765eaf3
Original-Change-Id: I7817cda7821fadeea0e887cb9860804256dabfd9
Original-Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-on: https://review.coreboot.org/18248
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/435338

src/vboot/secdata_mock.c

@@ -41,3 +41,13 @@ uint32_t antirollback_lock_space_rec_hash(void)
 {
 	return TPM_SUCCESS;
 }
+
+uint32_t antirollback_read_space_rec_hash(uint8_t *data, uint32_t size)
+{
+	return TPM_SUCCESS;
+}
+
+uint32_t antirollback_write_space_rec_hash(const uint8_t *data, uint32_t size)
+{
+	return TPM_SUCCESS;
+}