ARM: ux500: Stop registering the MOP500 Audio driver from platform code

In this patch we prevent MOP500 driver registration from platform
code and rely solely on Device Tree to do the probing for us.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

arch/arm/mach-ux500/board-mop500-msp.c

@@ -174,9 +174,6 @@ struct msp_i2s_platform_data msp3_platform_data = {
 /* Due for removal once the MSP driver has been fully DT:ed. */
 void mop500_of_msp_init(struct device *parent)
 {
-	pr_info("%s: Register platform-device 'snd-soc-u8500'.\n", __func__);
-	platform_device_register(&snd_soc_mop500);
-
 	pr_info("Initialize MSP I2S-devices.\n");
 	db8500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0,
 			   &msp0_platform_data);