SF: Upgrade to Composer HAL 2.4

Add plumbing for getDisplayCapabilities and getDisplayConnectionType.
The only functional change is that getDisplayType is no longer called
on hotplug.

Bug: 135929065
Bug: 134771872
Test: Rev HAL to 2.4 on crosshatch
Test: libsurfaceflinger_unittest
Change-Id: Ib2c0383397acef9cde860dd64182213ae7cbb286
diff --git a/services/surfaceflinger/CompositionEngine/Android.bp b/services/surfaceflinger/CompositionEngine/Android.bp
index fcb94fd..ae237e1 100644
--- a/services/surfaceflinger/CompositionEngine/Android.bp
+++ b/services/surfaceflinger/CompositionEngine/Android.bp
@@ -10,6 +10,7 @@
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.2",
         "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.4",
         "android.hardware.power@1.0",
         "android.hardware.power@1.3",
         "libbase",