BoardConfigQcom: Fix setting UM4.9 and UM4.14 specific flags

Calling is-board-platform-in-list from this makefile was not
returning the desirable output, thus resulting in a failure
to meet the conditions for the UM4.9 and UM4.14 family platforms.

Due to the fact that this makefile is included in a very early
stage in the build process, the QCOM macros are not defined.
Simply use standard macros like in rest of the makefile.

Change-Id: Iad889882f94167f1bc1761ddd549dac9dcdee3ba

config/BoardConfigQcom.mk

@@ -42,7 +42,7 @@ ifneq ($(filter $(UM_PLATFORMS),$(TARGET_BOARD_PLATFORM)),)
 endif
 
 # Enable DRM PP driver on UM platforms that support it
-ifeq ($(call is-board-platform-in-list, $(UM_4_9_FAMILY) $(UM_4_14_FAMILY)),true)
+ifneq ($(filter $(UM_4_9_FAMILY) $(UM_4_14_FAMILY),$(TARGET_BOARD_PLATFORM)),)
     TARGET_USES_DRM_PP := true
 endif
 
@@ -51,7 +51,7 @@ TARGET_ADDITIONAL_GRALLOC_10_USAGE_BITS ?= 0
 TARGET_ADDITIONAL_GRALLOC_10_USAGE_BITS += | (1 << 21)
 
 # Mark GRALLOC_USAGE_PRIVATE_10BIT_TP as valid gralloc bits on UM platforms that support it
-ifeq ($(call is-board-platform-in-list, $(UM_4_9_FAMILY) $(UM_4_14_FAMILY)),true)
+ifneq ($(filter $(UM_4_9_FAMILY) $(UM_4_14_FAMILY),$(TARGET_BOARD_PLATFORM)),)
     TARGET_ADDITIONAL_GRALLOC_10_USAGE_BITS += | (1 << 27)
 endif