poplar: Fix proper CPU and ARM Variant type am: b38b6c9ea6

Original change: https://android-review.googlesource.com/c/device/linaro/poplar/+/2298370

Change-Id: I22b2fd3220c9922dd02281c9a96f917645859caa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 277b883..f743a0c 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -1,7 +1,7 @@
 # Primary Arch
 TARGET_ARCH := arm
-TARGET_ARCH_VARIANT := armv7-a-neon
-TARGET_CPU_VARIANT := cortex-a9
+TARGET_ARCH_VARIANT := armv8-a
+TARGET_CPU_VARIANT := cortex-a53
 TARGET_CPU_ABI := armeabi-v7a
 TARGET_CPU_ABI2 := armeabi