sdm: drm: Add support for default non-atomic mode

Add support for booting up with default non-atomic mode
Add libdrmutils that currently has:
DRMMaster:
    Creates a master DRM session
    Converts ION handles to DRM FB_ID
DRMResMgr:
    Enables a default display path by providing APIs for
    connector id, crtc id, mode etc

Change-Id: I1dc697d2cc5e3fa744c99e2c9ddd57bf06e78c4f
CRs-fixed: 1114808
diff --git a/common.mk b/common.mk
index 54129bf..f105330 100644
--- a/common.mk
+++ b/common.mk
@@ -4,6 +4,9 @@
 #Common C flags
 common_flags := -DDEBUG_CALC_FPS -Wno-missing-field-initializers
 common_flags += -Wconversion -Wall -Werror -std=c++11
+ifneq ($(TARGET_IS_HEADLESS), true)
+    common_flags += -DCOMPILE_DRM
+endif
 
 ifeq ($(TARGET_USES_COLOR_METADATA), true)
 common_flags += -DUSE_COLOR_METADATA
@@ -28,6 +31,7 @@
 common_includes += $(display_top)/gpu_tonemapper
 ifneq ($(TARGET_IS_HEADLESS), true)
     common_includes += $(display_top)/libcopybit
+    common_includes += $(display_top)/libdrmutils
 endif
 
 common_includes += $(display_top)/include