MA-19204-14 enable dmabuf heap defconfig for non gki platform

There are no /dev/dma_heap/system and /dev/dma_heap/system-uncached.
It's because below commit remove CONFIG_DMABUF_HEAPS_SYSTEM.Here add it back.
245777a0 Jindong Yue MA-18983-3 defconfig: Sync defconfig after kernel merge

Change-Id: I38259bebf177ebe711b6a543dabb6c952232e241
Signed-off-by: Jessie Hao <juan.hao@nxp.com>

arch/arm64/configs/imx_v8_android_defconfig

@@ -970,6 +970,7 @@ CONFIG_QCOM_HIDMA=y
 CONFIG_FSL_DPAA2_QDMA=m
 CONFIG_DMATEST=y
 CONFIG_DMABUF_HEAPS=y
+CONFIG_DMABUF_HEAPS_SYSTEM=y
 CONFIG_DMABUF_SYSFS_STATS=y
 CONFIG_DMABUF_HEAPS_DEFERRED_FREE=y
 CONFIG_DMABUF_HEAPS_PAGE_POOL=y