package/sdl2: be explicit about OpenGL ES options

In addition to --enable-video-opengles, SDL2 configure script also
looks at --enable-video-opengles1 and --enable-video-opengles2. Since
all OpenGL ES providers in Buildroot provide at least up to OpenGL ES
2, enable both options when BR2_PACKAGE_SDL2_OPENGLES=y.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[yann.morin.1998@free.fr: split long lines]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit e48121750f084ff330e62e6110544b3e29921177)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/sdl2/sdl2.mk

@@ -138,10 +138,16 @@ SDL2_CONF_OPTS += --disable-video-opengl
 endif
 
 ifeq ($(BR2_PACKAGE_SDL2_OPENGLES),y)
-SDL2_CONF_OPTS += --enable-video-opengles
+SDL2_CONF_OPTS += \
+	--enable-video-opengles \
+	--enable-video-opengles1 \
+	--enable-video-opengles2
 SDL2_DEPENDENCIES += libgles
 else
-SDL2_CONF_OPTS += --disable-video-opengles
+SDL2_CONF_OPTS += \
+	--disable-video-opengles \
+	--disable-video-opengles1 \
+	--disable-video-opengles2
 endif
 
 ifeq ($(BR2_PACKAGE_ALSA_LIB),y)