- change OSAL_TASK_FUNCTION to have void* parameter (to be consistent with most popular RTOS)

- add new error enum TUSB_ERROR_OSAL_TASK_CREATE_FAILED
- move usbh_enumeration_task prototype to usbh.h
- change OSAL_SUBTASK_INVOKED_AND_WAIT behavior, will not "return" in calling task when subtask got error status.
calling task need to do that after the call
- osal_queue_receive signature from uint32_t* to void*

- implement osal_freertos.h for FreeRTOS 7.3 --> able to compile & build host_freertos
+ OSAL_TASK_FUNCTION
+ turn on FPU for M4 in both host_os_none & host_freertos (freertos requires FPU to be on to compile)
+ osal_task_create
+ OSAL_SUBTASK_INVOKED_AND_WAIT
+ SUBTASK_ASSERT
+ osal_semaphore_reset
+ osal_queue_flush
+ adding heap_1.c for memory management

tinyusb/host/usbh.h

@@ -58,6 +58,7 @@
 //--------------------------------------------------------------------+
 // INCLUDE
 //--------------------------------------------------------------------+
+#include "osal/osal.h" // TODO refractor move to common.h ?
 #include "hcd.h"
 
 //--------------------------------------------------------------------+
@@ -108,10 +109,11 @@ void         tusbh_device_mount_failed_cb(tusb_error_t error, tusb_descriptor_de
 #endif
 
 //--------------------------------------------------------------------+
-// CLASS-USBD API
+// CLASS-USBD & INTERNAL API
 //--------------------------------------------------------------------+
 #ifdef _TINY_USB_SOURCE_FILE_
 
+OSAL_TASK_FUNCTION (usbh_enumeration_task) (void* p_task_para);
 tusb_error_t usbh_init(void);
 
 #endif