wpa_supplicant: supports only the real OpenSSL, not LibreSSL

wpa_supplicant will not build with LibreSSL without patches, so let's
support only OpenSSL.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/wpa_supplicant/wpa_supplicant.mk

@@ -97,8 +97,8 @@ WPA_SUPPLICANT_CONFIG_ENABLE += CONFIG_WPS
 endif
 
 # Try to use openssl if it's already available
-ifeq ($(BR2_PACKAGE_OPENSSL),y)
-WPA_SUPPLICANT_DEPENDENCIES += openssl
+ifeq ($(BR2_PACKAGE_LIBOPENSSL),y)
+WPA_SUPPLICANT_DEPENDENCIES += libopenssl
 WPA_SUPPLICANT_LIBS += $(if $(BR2_STATIC_LIBS),-lcrypto -lz)
 WPA_SUPPLICANT_CONFIG_EDITS += 's/\#\(CONFIG_TLS=openssl\)/\1/'
 else