[U-Boot] [PATCH] at91rm9200: fix errors with CONFIG_CMD_I2C_TREE

[Jens Scharsig <esw@bus-elektronik.de>]

It's the same like first, but i2c_get_bus_speed returns CFG_I2C_SPEED
instead of 0. I think this is the better value.

This patch prevents linker error on AT91RM9200 boards, if
CONFIG_CMD_I2_TREE is set.
It implements i2c_set_bus_speed and i2c_get_bus_speed as a dummy function.

Signed-off-by: Jens Scharsig <esw@bus-elektronik.de>
---

diff --git a/cpu/arm920t/at91rm9200/i2c.c b/cpu/arm920t/at91rm9200/i2c.c
index 826cea8..48d3986 100644
--- a/cpu/arm920t/at91rm9200/i2c.c
+++ b/cpu/arm920t/at91rm9200/i2c.c
@@ -203,4 +203,14 @@ void i2c_reg_write(uchar i2c_addr, uchar reg, uchar
val)
 	i2c_write(i2c_addr, reg, 1, &val, 1);
 }

+int i2c_set_bus_speed(unsigned int speed)
+{
+	return -1;
+}
+
+unsigned int i2c_get_bus_speed(void)
+{
+	return CFG_I2C_SPEED;
+}
+
 #endif /* CONFIG_HARD_I2C */