ARM: davinci: uart: move to devid based clk_get

For modules having single clock, clk_get should be done with dev_id.
But current davinci implementation handles multiple instances
of the UART devices with single platform_device_register. Hence clk_get
is based on con_id rather than dev_id, this is not correct. Do
platform_device_register for each instance and clk_get on dev_id.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
[nsekhar@ti.com: actually stop using con_id in clk_get(), squash the
		 patch adding OF aux data into this one]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm/mach-davinci/da830.c

@@ -395,9 +395,9 @@ static struct clk_lookup da830_clks[] = {
 	CLK(NULL,		"tptc0",	&tptc0_clk),
 	CLK(NULL,		"tptc1",	&tptc1_clk),
 	CLK("da830-mmc.0",	NULL,		&mmcsd_clk),
-	CLK(NULL,		"uart0",	&uart0_clk),
-	CLK(NULL,		"uart1",	&uart1_clk),
-	CLK(NULL,		"uart2",	&uart2_clk),
+	CLK("serial8250.0",	NULL,		&uart0_clk),
+	CLK("serial8250.1",	NULL,		&uart1_clk),
+	CLK("serial8250.2",	NULL,		&uart2_clk),
 	CLK("spi_davinci.0",	NULL,		&spi0_clk),
 	CLK("spi_davinci.1",	NULL,		&spi1_clk),
 	CLK(NULL,		"ecap0",	&ecap0_clk),
@@ -1199,7 +1199,7 @@ static struct davinci_soc_info davinci_soc_info_da830 = {
 	.gpio_base		= DA8XX_GPIO_BASE,
 	.gpio_num		= 128,
 	.gpio_irq		= IRQ_DA8XX_GPIO0,
-	.serial_dev		= &da8xx_serial_device,
+	.serial_dev		= da8xx_serial_device,
 	.emac_pdata		= &da8xx_emac_pdata,
 };