docs(usb): add ESP32-H4 support notes and pin map

- usb_device: add esp32h4 DP/DM defaults (GPIO22/21) and "only:: esp32h4";
  add H4 PHY considerations; add H4 MSC write-speed table; generalize MSC SD
  note to {IDF_TARGET_NAME}; exclude tusb_ncm on H4
- usb_host: include esp32h4 in feature gates; add H4 PHY considerations
- usb_host_notes_dwc_otg: enable H4 by extending "only::" selector
- examples/usb: add ESP32-H4 row to DP/DM pin map
- docs_not_updated: drop H4 entries for usb_device, usb_host, and related
  usb_host notes now covered
- soc(esp32h4): set internal PHY mapping to DP=22, DM=21

docs/docs_not_updated/esp32h4.txt

@@ -125,9 +125,7 @@ api-reference/peripherals/gptimer.rst
 api-reference/peripherals/sdio_slave.rst
 api-reference/peripherals/bitscrambler.rst
 api-reference/peripherals/temp_sensor.rst
-api-reference/peripherals/usb_device.rst
 api-reference/peripherals/jpeg.rst
-api-reference/peripherals/usb_host.rst
 api-reference/peripherals/camera_driver.rst
 api-reference/peripherals/adc_oneshot.rst
 api-reference/peripherals/sdspi_share.rst
@@ -138,14 +136,6 @@ api-reference/peripherals/sdspi_host.rst
 api-reference/peripherals/vad.rst
 api-reference/peripherals/i2s.rst
 api-reference/peripherals/isp.rst
-api-reference/peripherals/usb_host/usb_host_notes_usbh.rst
-api-reference/peripherals/usb_host/usb_host_notes_ext_hub.rst
-api-reference/peripherals/usb_host/usb_host_notes_arch.rst
-api-reference/peripherals/usb_host/usb_host_notes_index.rst
-api-reference/peripherals/usb_host/usb_host_notes_ext_port.rst
-api-reference/peripherals/usb_host/usb_host_notes_design.rst
-api-reference/peripherals/usb_host/usb_host_notes_enum.rst
-api-reference/peripherals/usb_host/usb_host_notes_dwc_otg.rst
 api-reference/peripherals/dedic_gpio.rst
 api-reference/peripherals/sd_pullup_requirements.rst
 api-reference/peripherals/parlio.rst