hikey/hikey960: Clean up old build options for old kernels

We had a number of older build options to keep things
working with older kernels, but with those kernels
being unsupported with AOSP, we can go ahead and drop
this logic to simplify things.

Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: Ibeaac890391fb21b33ebc45640053ab9db52ace9
diff --git a/hikey/device-hikey.mk b/hikey/device-hikey.mk
index cec2e6f..aa202b3 100644
--- a/hikey/device-hikey.mk
+++ b/hikey/device-hikey.mk
@@ -51,9 +51,7 @@
 # Sensors HAL
 PRODUCT_PACKAGES += sensors.hikey
 
-ifeq ($(HIKEY_USE_DRM_HWCOMPOSER), true)
-  PRODUCT_PACKAGES += hwcomposer.drm_hikey
-endif
+PRODUCT_PACKAGES += hwcomposer.drm_hikey
 
 # Include mali blobs from ARM
 PRODUCT_PACKAGES += libGLES_mali.so END_USER_LICENCE_AGREEMENT.txt