remove dcd_esp32sx which is replaced by dwc2

Author: hathach

README.rst

@@ -122,7 +122,7 @@ Supported CPUs
 +--------------+-----------------------------+--------+------+-----------+------------------------+-------------------+
 | Dialog       | DA1469x                     | ✔      | ✖    | ✖         | da146xx                |                   |
 +--------------+-----------------------------+--------+------+-----------+------------------------+-------------------+
-| Espressif    | S2, S3                      | ✔      | ✔    | ✖         | dwc2 or esp32sx        |                   |
+| Espressif    | S2, S3                      | ✔      | ✔    | ✖         | dwc2                   |                   |
 | ESP32        +-----------------------------+--------+------+-----------+------------------------+-------------------+
 |              | P4                          | ✔      | ✔    | ✔         | dwc2                   |                   |
 |              +-----------------------------+--------+------+-----------+------------------------+-------------------+

src/class/audio/audio_device.c

@@ -79,10 +79,9 @@
 // Linear buffer in case target MCU is not capable of handling a ring buffer FIFO e.g. no hardware buffer
 // is available or driver is would need to be changed dramatically
 
-// Only STM32 and dcd_transdimension use non-linear buffer for now
-// dwc2 except esp32sx (since it may use dcd_esp32sx)
+// Only STM32 and ChipIdea HS use non-linear buffer for now
 // Ring buffer is incompatible with dcache, since neither address nor size is aligned to cache line
-#if (defined(TUP_USBIP_DWC2) && !TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)) || \
+#if defined(TUP_USBIP_DWC2) || \
     defined(TUP_USBIP_FSDEV) ||                                                     \
     CFG_TUSB_MCU == OPT_MCU_RX63X ||                                                \
     CFG_TUSB_MCU == OPT_MCU_RX65X ||                                                \