vboot: merge vboot_api_stub_init.c into vboot2 namespace

Move vb2ex_mtime stub from vboot_api_stub_init
into 2lib/2stub.c in vboot2 namespace.

BUG=b:124141368, chromium:968464
TEST=make clean && make runtests
BRANCH=none

Signed-off-by: Joel Kitching <kitching@google.com>
Change-Id: Ica27630090f854e1abc56acae0294b68deb74a0f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2635676
Reviewed-by: Joel Kitching <kitching@chromium.org>
Tested-by: Joel Kitching <kitching@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
diff --git a/Android.mk b/Android.mk
index 64d89e1..628b605 100644
--- a/Android.mk
+++ b/Android.mk
@@ -62,7 +62,6 @@
 VBINIT_SRCS += \
 	firmware/stub/tpm_lite_stub.c \
 	firmware/stub/utility_stub.c \
-	firmware/stub/vboot_api_stub_init.c \
 	firmware/stub/vboot_api_stub_region.c
 
 VBSF_SRCS += \
diff --git a/Makefile b/Makefile
index 6ab0084..d8a06a6 100644
--- a/Makefile
+++ b/Makefile
@@ -434,7 +434,6 @@
 	firmware/stub/tpm_lite_stub.c \
 	firmware/stub/vboot_api_stub.c \
 	firmware/stub/vboot_api_stub_disk.c \
-	firmware/stub/vboot_api_stub_init.c \
 	firmware/stub/vboot_api_stub_stream.c \
 	firmware/2lib/2stub.c
 endif
@@ -515,7 +514,6 @@
 	firmware/stub/tpm_lite_stub.c \
 	firmware/stub/vboot_api_stub.c \
 	firmware/stub/vboot_api_stub_disk.c \
-	firmware/stub/vboot_api_stub_init.c \
 	futility/dump_kernel_config_lib.c \
 	$(CROSSYSTEM_ARCH_C) \
 	host/lib/chromeos_config.c \
diff --git a/firmware/2lib/2stub.c b/firmware/2lib/2stub.c
index 1454f77..d26ee74 100644
--- a/firmware/2lib/2stub.c
+++ b/firmware/2lib/2stub.c
@@ -8,10 +8,15 @@
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <sys/time.h>
 
 #include "2api.h"
+#include "2common.h"
 #include "2sysincludes.h"
 
+/*****************************************************************************/
+/* General utility stubs */
+
 __attribute__((weak))
 void vb2ex_printf(const char *func, const char *fmt, ...)
 {
@@ -33,10 +38,11 @@
 }
 
 __attribute__((weak))
-vb2_error_t vb2ex_tpm_clear_owner(struct vb2_context *ctx)
+uint32_t vb2ex_mtime(void)
 {
-	fprintf(stderr, "%s: function not implemented\n", __func__);
-	return VB2_ERROR_EX_UNIMPLEMENTED;
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+	return tv.tv_sec * VB2_MSEC_PER_SEC + tv.tv_usec / VB2_USEC_PER_MSEC;
 }
 
 __attribute__((weak))
@@ -48,6 +54,16 @@
 	return VB2_ERROR_EX_UNIMPLEMENTED;
 }
 
+/*****************************************************************************/
+/* TPM-related stubs */
+
+__attribute__((weak))
+vb2_error_t vb2ex_tpm_clear_owner(struct vb2_context *ctx)
+{
+	fprintf(stderr, "%s: function not implemented\n", __func__);
+	return VB2_ERROR_EX_UNIMPLEMENTED;
+}
+
 __attribute__((weak))
 vb2_error_t vb2ex_tpm_set_mode(enum vb2_tpm_mode mode_val)
 {
diff --git a/firmware/stub/vboot_api_stub_init.c b/firmware/stub/vboot_api_stub_init.c
deleted file mode 100644
index 8068412..0000000
--- a/firmware/stub/vboot_api_stub_init.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- *
- * Stub implementations of firmware-provided API functions.
- */
-
-#include <stdarg.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <sys/time.h>
-
-#include "2common.h"
-#include "vboot_api.h"
-
-__attribute__((weak))
-uint32_t vb2ex_mtime(void)
-{
-	struct timeval tv;
-	gettimeofday(&tv, NULL);
-	return tv.tv_sec * VB2_MSEC_PER_SEC + tv.tv_usec / VB2_USEC_PER_MSEC;
-}