avr32: pass i2c board info through at32_add_device_twi

New-style I2C drivers require that motherboard-mounted I2C devices are
registered with the I2C core, typically at arch_initcall time.  This
can be done nice and neat by passing the struct i2c_board_info[]
through at32_add_device_twi just like we do for the SPI board info.

While we've got the hood up, remove a duplicate declaration of
at32_add_device_twi() in board.h.

[hskinnemoen@atmel.com: add missing i2c_board_info forward-declaration]
Signed-Off-By: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

arch/avr32/mach-at32ap/at32ap700x.c

@@ -990,7 +990,9 @@ static struct clk atmel_twi0_pclk = {
 	.index		= 2,
 };
 
-struct platform_device *__init at32_add_device_twi(unsigned int id)
+struct platform_device *__init at32_add_device_twi(unsigned int id,
+						    struct i2c_board_info *b,
+						    unsigned int n)
 {
 	struct platform_device *pdev;
 
@@ -1010,6 +1012,9 @@ struct platform_device *__init at32_add_device_twi(unsigned int id)
 
 	atmel_twi0_pclk.dev = &pdev->dev;
 
+	if (b)
+		i2c_register_board_info(id, b, n);
+
 	platform_device_add(pdev);
 	return pdev;
 

include/asm-avr32/arch-at32ap/board.h

@@ -66,7 +66,10 @@ struct platform_device *at32_add_device_pwm(u32 mask);
 struct platform_device *
 at32_add_device_ssc(unsigned int id, unsigned int flags);
 
-struct platform_device *at32_add_device_twi(unsigned int id);
+struct i2c_board_info;
+struct platform_device *at32_add_device_twi(unsigned int id,
+					    struct i2c_board_info *b,
+					    unsigned int n);
 struct platform_device *at32_add_device_mci(unsigned int id);
 struct platform_device *at32_add_device_ac97c(unsigned int id);
 struct platform_device *at32_add_device_abdac(unsigned int id);