haswell: Move some MRC settings to devicetree

There's no generic way to tell whether a mainboard has an EC or not.
Making Kconfig symbols for these options seems overkill, too. So, just
put them on the devicetree. Also, drop unnecessary assignments when the
board's current value is zero, as the struct defaults to zero already.

Change-Id: If2ebac5fcab278c97dfaf8adc9d1e125888acafe
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43129
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Tristan Corrick <tristan@corrick.kiwi>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/haswell/chip.h b/src/northbridge/intel/haswell/chip.h
index 593144d..28c0828 100644
--- a/src/northbridge/intel/haswell/chip.h
+++ b/src/northbridge/intel/haswell/chip.h
@@ -32,6 +32,12 @@
 
 	bool gpu_ddi_e_connected;
 
+	bool ec_present;
+
+	bool dq_pins_interleaved;
+
+	bool usb_xhci_on_resume;
+
 	struct i915_gpu_controller_info gfx;
 };