Hello,

when compiling for a imx53 with i2c enabled i got the following error:

drivers/built-in.o: In function `i2c_imx_set_clk':
/home/ggebhardt/repos/ecuv6_bl/barebox/drivers/i2c/busses/i2c-imx.c:282: 
undefined reference to `imx_get_i2cclk'
make[4]: *** [.tmp_barebox1] Error 1
make[3]: *** [CMakeFiles/bootloader] Error 2
make[2]: *** [CMakeFiles/bootloader.dir/all] Error 2
make[1]: *** [CMakeFiles/bootloader.dir/rule] Error 2
make: *** [bootloader] Error 2

I copied the following from the corresponding imx51 implementation:

diff --git a/barebox/arch/arm/mach-imx/speed-imx53.c 
b/barebox/arch/arm/mach-imx/speed-imx53.c
index 0d6ac24..a168c65 100644
--- a/barebox/arch/arm/mach-imx/speed-imx53.c
+++ b/barebox/arch/arm/mach-imx/speed-imx53.c
@@ -169,6 +169,11 @@ unsigned long imx_get_fecclk(void)
        return imx_get_ipgclk();
 }
 
+unsigned long imx_get_i2cclk(void)
+{
+       return imx_get_ipgclk();
+}
+
 unsigned long imx_get_mmcclk(void)
 {
        u32 reg, prediv, podf, rate;