global: add dependency on esp_timer component and include esp_timer.h

Some components were including esp_timer.h without declaring a
dependency on esp_timer component. This used to work due to a
transitive public dependency on esp_timer from freertos component.
Add explicit dependencies where needed.
Also some source files were using esp_timer functions without
including the header file. This used to work because esp_timer.h was
included from freertos port header file. This commit adds esp_timer.h
includes where needed.

components/freertos/test/CMakeLists.txt

@@ -7,4 +7,4 @@ idf_component_register(SRC_DIRS integration/event_groups
                                 performance
                                 port
                        PRIV_INCLUDE_DIRS .
-                       PRIV_REQUIRES cmock test_utils esp_system driver)
+                       PRIV_REQUIRES cmock test_utils esp_system driver esp_timer)

components/freertos/test/integration/tasks/test_task_suspend_resume.c

@@ -21,6 +21,7 @@
 #endif
 #include "esp_freertos_hooks.h"
 #include "esp_rom_sys.h"
+#include "esp_timer.h"
 
 /* Counter task counts a target variable forever */
 static void task_count(void *vp_counter)