melonds: add lGLESv2 if HAVE_OPENGLES3 (#1814)

Author: spleen1981

packages/lakka/libretro_cores/melonds/patches/melonds-dont-force-opengl.patch

@@ -2,18 +2,22 @@ diff --git a/Makefile b/Makefile
 index ede55b3..86ccc10 100644
 --- a/Makefile
 +++ b/Makefile
-@@ -50,6 +50,10 @@ TARGET_NAME := melonds
+@@ -50,6 +50,14 @@ TARGET_NAME := melonds
  LIBS		    = -lm
  DEFINES :=
 
 +ifeq ($(HAVE_OPENGL), 1)
 +LIBS += -lGL
 +endif
++
++ifeq ($(HAVE_OPENGLES3), 1)
++LIBS += -lGLESv2
++endif
 +
  # GIT HASH
  GIT_VERSION := " $(shell git rev-parse --short HEAD || echo unknown)"
  ifneq ($(GIT_VERSION)," unknown")
-@@ -72,10 +76,6 @@ ifeq ($(platform), unix)
+@@ -72,10 +80,6 @@ ifeq ($(platform), unix)
     CFLAGS += -D_GNU_SOURCE
     LIBS += -lpthread -lrt
     HAVE_THREADS=1