GraphicsEnv is separated from libui

GraphicsEnv class is separated from libui in order to make libui VNDK.
The class is then built as a standalone library named
'libgraphicsenv.so'. Clients that were using the GraphicsEnv class are
also updated to reference the new library.

Bug: 38097618
Test: sailfish builds and boots

Change-Id: I4c35fdff0e92453b98ea21136ef0f99fab01b6f8
diff --git a/libs/ui/Android.bp b/libs/ui/Android.bp
index ab48a7f..452f529 100644
--- a/libs/ui/Android.bp
+++ b/libs/ui/Android.bp
@@ -53,7 +53,6 @@
         "GraphicBuffer.cpp",
         "GraphicBufferAllocator.cpp",
         "GraphicBufferMapper.cpp",
-        "GraphicsEnv.cpp",
         "HdrCapabilities.cpp",
         "PixelFormat.cpp",
         "Rect.cpp",
@@ -67,7 +66,6 @@
         "android.hardware.configstore@1.0",
         "android.hardware.configstore-utils",
         "libbase",
-        "libnativeloader",
         "libcutils",
         "libhardware",
         "libhidlbase",
@@ -75,6 +73,7 @@
         "libsync",
         "libutils",
         "liblog",
+        "libgraphicsenv",
     ],
 
     static_libs: [