esp32: Remove dependency on esp_tinyusb.

Instead, depend directly on espressif/tinyusb component
(which is otherwise transitively included via esp_tinyusb).

Turns out esp_tinyusb builds a bunch of source files with
symbols that conflict with our tinyusb symbols (i.e.
descriptors_control.c).

This only works because nothing in MicroPython causes the linker to include
the esp_tinyusb.a library, however in order to override the dcd_int_handler
(in following commit) this caused the linker to pull this library in and
break the build.

There's also a problematic header skew - TinyUSB component was building
with the tusb_config.h file from esp_tinyusb component, but we have our own
tusb_config.h file in shared/tinyusb. The changes in parent commit allow
us to build the TinyUSB component with our tusb_config.h header.

User-facing impacts are:

- Can no longer override USB VID & PID via sdkconfig, have to set
  MICROPY_HW_USB_VID/PID instead (changes applied in this commit).

- esp32 boards will have the same USB serial number as other ports
  (i.e. based on the hardware MAC address, not hard-coded).

Side effects include:

- CFG_TUD_DWC2_SLAVE_ENABLE is now set, DMA mode is disabled.

Signed-off-by: Angus Gratton <angus@redyak.com.au>

ports/esp32/esp32_common.cmake

@@ -97,6 +97,14 @@ if(MICROPY_PY_TINYUSB)
     list(APPEND MICROPY_INC_TINYUSB
         ${MICROPY_DIR}/shared/tinyusb/
     )
+
+    # Build the Espressif tinyusb component with MicroPython shared/tinyusb/tusb_config.h
+    idf_component_get_property(tusb_lib espressif__tinyusb COMPONENT_LIB)
+    target_include_directories(${tusb_lib} PRIVATE
+        ${MICROPY_DIR}/shared/tinyusb
+        ${MICROPY_DIR}
+        ${MICROPY_PORT_DIR}
+        ${MICROPY_BOARD_DIR})
 endif()
 
 list(APPEND MICROPY_SOURCE_PORT