src/vboot: mark factory_initialze_tpm() as static

This function is not used anywhere else in the code.

BRANCH=none
BUG=none
TEST=reef and kevin boards (using tpm1.2 and tpm2.0 respectively)
     build successfully.

Change-Id: Ifcc345ae9c22b25fdcfc2e547e70766021d27e32
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://review.coreboot.org/17387
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)

src/include/antirollback.h

@@ -73,15 +73,6 @@ uint32_t tpm_extend_pcr(struct vb2_context *ctx, int pcr,
  */
 uint32_t tpm_clear_and_reenable(void);
 
-/**
- * Perform one-time initializations.
- *
- * Create the NVRAM spaces, and set their initial values as needed.  Sets the
- * nvLocked bit and ensures the physical presence command is enabled and
- * locked.
- */
-uint32_t factory_initialize_tpm(struct vb2_context *ctx);
-
 /**
  * Start the TPM and establish the root of trust for the antirollback mechanism.
  */

src/vboot/secdata_tpm.c

@@ -329,7 +329,14 @@ uint32_t antirollback_lock_space_rec_hash(void)
 }
 #endif
 
-uint32_t factory_initialize_tpm(struct vb2_context *ctx)
+/**
+ * Perform one-time initializations.
+ *
+ * Create the NVRAM spaces, and set their initial values as needed.  Sets the
+ * nvLocked bit and ensures the physical presence command is enabled and
+ * locked.
+ */
+static uint32_t factory_initialize_tpm(struct vb2_context *ctx)
 {
 	uint32_t result;