make ARCH=arm64 CROSS_COMPILE=aarch64-linux-android- savedefconfig

Suppose common is kernel source folder 

 
    make -C kernel/  ARCH=arm64  CROSS_COMPILE=aarch64-linux-android-      kvim_defconfig
    make -C kernel/  ARCH=arm64  CROSS_COMPILE=aarch64-linux-android-    menuconfig 
    make -C kernel/  ARCH=arm64  CROSS_COMPILE=aarch64-linux-android-    savedefconfig

make V=1  -C kernel/  ARCH=arm64  CROSS_COMPILE=aarch64-linux-android-    savedefconfig

  cp kernel/defconfig  common/arch/arm64/configs/kvim_defconfig