Uninstalls ISR service on cam deinit (#516)

Since `gpio_install_isr_service()` is called when initializing the
camera, but on de-initiazlization the ISR service is not uninstalled.
This causes an error `gpio_install_isr_service(410): GPIO isr service
already installed` when the camera is re-initialized.

Co-authored-by: Me No Dev <[email protected]>

Author: Wouter de Bie

target/esp32/ll_cam.c

@@ -253,7 +253,7 @@ esp_err_t ll_cam_deinit(cam_obj_t *cam)
         esp_intr_free(cam->cam_intr_handle);
         cam->cam_intr_handle = NULL;
     }
-
+    gpio_uninstall_isr_service();
     return ESP_OK;
 }
 

target/esp32s2/ll_cam.c

@@ -95,7 +95,7 @@ esp_err_t ll_cam_deinit(cam_obj_t *cam)
         esp_intr_free(cam->cam_intr_handle);
         cam->cam_intr_handle = NULL;
     }
-
+    gpio_uninstall_isr_service();
     return ESP_OK;
 }