ASoC: 88pm860x-codec: Fix possibly missing string termination

Coverity spotted an issue with strncpy() in pm860x_codec_probe()
which does not take the \0 termination byte into account. Fix this
by making the buffers one byte larger so the can really accommodate
MAX_NAME_LEN bytes long strings.
Signed-off-by: NDaniel Mack <daniel@zonque.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/codecs/88pm860x-codec.c

@@ -146,7 +146,7 @@ struct pm860x_priv {
 	struct pm860x_det	det;
 
 	int			irq[4];
-	unsigned char		name[4][MAX_NAME_LEN];
+	unsigned char		name[4][MAX_NAME_LEN+1];
 };
 
 /* -9450dB to 0dB in 150dB steps ( mute instead of -9450dB) */