fix(usb_host_test): Fix target tests build for esp32s31

[peter-marcisovsky]

Description

USB Host target test: enum

Fixing build of usb host enum test for esp32s31. Failing in CI with following log:

CI error log

/__w/esp-usb/esp-usb/host/usb/test/target_test/enum/main/mock_dev.c: In function 'mock_dev_insert':
/__w/esp-usb/esp-usb/host/usb/test/target_test/enum/main/mock_dev.c:50:69: error: 'USB_SRP_BVALID_IN_IDX' undeclared (first use in this function)
   50 |         esp_rom_gpio_connect_in_signal(GPIO_MATRIX_CONST_ONE_INPUT, USB_SRP_BVALID_IN_IDX, false);
      |                                                                     ^~~~~~~~~~~~~~~~~~~~~
/__w/esp-usb/esp-usb/host/usb/test/target_test/enum/main/mock_dev.c:50:69: note: each undeclared identifier is reported only once for each function it appears in
/__w/esp-usb/esp-usb/host/usb/test/target_test/enum/main/mock_dev.c: In function 'mock_dev_remove':
/__w/esp-usb/esp-usb/host/usb/test/target_test/enum/main/mock_dev.c:59:70: error: 'USB_SRP_BVALID_IN_IDX' undeclared (first use in this function)
   59 |         esp_rom_gpio_connect_in_signal(GPIO_MATRIX_CONST_ZERO_INPUT, USB_SRP_BVALID_IN_IDX, false);
      |                                                                      ^~~~~~~~~~~~~~~~~~~~~
[662/674] Building C object esp-idf/main/CMakeFiles/__idf_main.dir/test_addr.c.obj

USB Host target test: HCD

Fixing build of usb host HCD test for esp32s31. Failing in CI with following log:

CI error log

/esp/esp-usb/host/usb/test/target_test/common/hcd_common.c
/home/peter/esp/esp-usb/host/usb/test/target_test/common/hcd_common.c:12:10: fatal error: soc/usb_wrap_struct.h: No such file or directory
   12 | #include "soc/usb_wrap_struct.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

Related

• Fixing feat(esp_tinyusb): Support ESP32-S31 as HS-only single-port device #467
• Fixing feat(usb_host): Add ESP32-S31 support to manifest and docs #461

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Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• All CI checks (GH Actions) pass.
• Documentation is updated as needed.
• Tests are updated or added as necessary.
• Code is well-commented, especially in complex areas.
• Git history is clean — commits are squashed to the minimum necessary.

---

Note

Low Risk
Low risk: changes are limited to CI test enablement rules and a test-only include cleanup, with no impact on production USB stack behavior.

Overview
Resolves esp32s31 target-test build failures by disabling the USB host enumeration target test on esp32s31 via .build-test-rules.yml (it relies on FSLS PHY attach/detach emulation signals not present on that target).

Also fixes the USB host HCD target test build by removing the soc/usb_wrap_struct.h include from host/usb/test/target_test/common/hcd_common.c, avoiding a missing-header error on esp32s31.

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