ARM: S3C6410: Declare IISv4 audio-bus clock

Declare 'audio-bus' clock for IISv4 controller of S3C6410.
Even though the name is same as that for IISv3, the id is
set to -1(just one instance of the controller is available)
which helps always fetch the correct clock.
Signed-off-by: NJassi Brar <jassi.brar@samsung.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

arch/arm/mach-s3c64xx/clock.c

@@ -668,6 +668,16 @@ static struct clksrc_clk clksrcs[] = {
 		.reg_src	= { .reg = S3C_CLK_SRC, .shift = 10, .size = 3  },
 		.reg_div	= { .reg = S3C_CLK_DIV2, .shift = 12, .size = 4  },
 		.sources	= &clkset_audio1,
+	}, {
+		.clk	= {
+			.name		= "audio-bus",
+			.id		= -1,  /* There's only one IISv4 port */
+			.ctrlbit        = S3C6410_CLKCON_SCLK_AUDIO2,
+			.enable		= s3c64xx_sclk_ctrl,
+		},
+		.reg_src	= { .reg = S3C6410_CLK_SRC2, .shift = 0, .size = 3  },
+		.reg_div	= { .reg = S3C_CLK_DIV2, .shift = 24, .size = 4  },
+		.sources	= &clkset_audio2,
 	}, {
 		.clk	= {
 			.name		= "irda-bus",