vendor: Clean up QCOM defs in single BoardConfig

Note: Below is removed.
  ifneq ($(FORCE_QCOM_DISPLAY_HAL_VARIANT),)
      QCOM_HARDWARE_VARIANT := $(FORCE_QCOM_DISPLAY_HAL_VARIANT)

Use OVERRIDE_QCOM_HARDWARE_VARIANT is entire hardware variant needs to be replaced.
Use FORCE_QCOM_DISPLAY_HAL_VARIANT only if display hal needs to replaced.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Change-Id: Ic5535a5e1fd962a510a2a3374b5d184e69175fd5
3 files changed