vboot: fix mocked TPM build

These function prototypes changed recently and the mocked driver is not
building any longer.

BUG=none
BRANCH=none
TEST=successful build with MOCK_TPM=1

Change-Id: Iaaf2d2c2883add7a478d7ee887b06e45c65e1bb2
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/65338
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
diff --git a/firmware/lib/mocked_rollback_index.c b/firmware/lib/mocked_rollback_index.c
index f83e037..d2f2bea 100644
--- a/firmware/lib/mocked_rollback_index.c
+++ b/firmware/lib/mocked_rollback_index.c
@@ -48,7 +48,7 @@
 }
 
 
-uint32_t RollbackFirmwareLock(int recovery_mode) {
+uint32_t RollbackFirmwareLock(void) {
   return TPM_SUCCESS;
 }
 
@@ -64,6 +64,6 @@
 }
 
 
-uint32_t RollbackKernelLock(void) {
+uint32_t RollbackKernelLock(int recovery_mode) {
   return TPM_SUCCESS;
 }