drivers/atwinc15x0: allow compilation for ESPs

Author: gschorcht

drivers/atwinc15x0/Makefile.dep

@@ -17,10 +17,3 @@ USEPKG += driver_atwinc15x0
 FEATURES_REQUIRED += periph_gpio
 FEATURES_REQUIRED += periph_gpio_irq
 FEATURES_REQUIRED += periph_spi
-
-# esp8266 and esp32 vendor code and atwinc15x0 both define conflicting
-# spi_flash_{read, write} functions.
-# esp8266 and esp32 already have build-in WiFi, so it's unlikely to ever
-# use this driver - just blacklist the architecture.
-FEATURES_BLACKLIST += arch_esp8266
-FEATURES_BLACKLIST += arch_esp32

drivers/atwinc15x0/atwinc15x0_bus.c

@@ -40,8 +40,10 @@ sint8 nm_bus_init(void *arg)
     assert(atwinc15x0);
     assert(gpio_is_valid(atwinc15x0->params.ssn_pin));
 
+#if !defined(CPU_ESP32) && !defined(CPU_ESP8266)
     gpio_init(atwinc15x0->params.ssn_pin, GPIO_OUT);
     gpio_set(atwinc15x0->params.ssn_pin);
+#endif
 
     nm_bsp_reset();
     nm_bsp_sleep(1);