Update profiles/base/make.defaults, profiles/base/parent

Deleted base/.gitkeep

profiles/base/make.defaults

+# Nintendo switch hardware
+CHOST=aarch64-unknown-linux-gnu
+CPU_FLAGS_ARM="edsp neon thumb vfp vfpv3 vfpv4 vfp-d32 aes sha1 sha2 crc32 v4 v5 v6 v7 v8 thumb2"
+
+BOARD_COMPILER_FLAGS="-march=armv8-a+crypto+crc+simd -mlittle-endian -mabi=lp64 -mtune=cortex-a57 -O3 -pipe"
+CFLAGS="${BOARD_COMPILER_FLAGS}"
+CXXFLAGS="${BOARD_COMPILER_FLAGS}"
+
+USE="pulseaudio"         # Without them the sound switch between TV and handheld mode is difficult
+USE="$USE vulkan"        # Graphics acceleration
+USE="$USE gstreamer v4l" # Video acceleration
+
+INPUT_DEVICES="libinput joystick"
+
+CHROMEOS_KERNEL_CONFIG="arch/arm64/configs/tegra_linux_defconfig"

profiles/base/parent

+chromiumos:default/linux/arm64/10.0/chromeos