arm64: defconfig: Enable RT5659

Enable the RT5659 audio codec driver. Jetson AGX Xavier has RT5658 codec
which is compatible with this driver. This enables user to test external
audio.
Signed-off-by: NSameer Pujar <spujar@nvidia.com>
Acked-by: NJon Hunter <jonathanh@nvidia.com>
Cc: Oder Chiou <oder_chiou@realtek.com>
Cc: Bard Liao <bardliao@realtek.com>

arch/arm64/configs/defconfig

@@ -746,6 +746,7 @@ CONFIG_SND_SOC_AK4613=m
 CONFIG_SND_SOC_ES7134=m
 CONFIG_SND_SOC_ES7241=m
 CONFIG_SND_SOC_PCM3168A_I2C=m
+CONFIG_SND_SOC_RT5659=m
 CONFIG_SND_SOC_SIMPLE_AMPLIFIER=m
 CONFIG_SND_SOC_TAS571X=m
 CONFIG_SND_SOC_WCD934X=m