imx-common: add i2c.c for bus recovery support

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
diff --git a/arch/arm/include/asm/arch-mx6/clock.h b/arch/arm/include/asm/arch-mx6/clock.h
index b91d8bf..c55c18d 100644
--- a/arch/arm/include/asm/arch-mx6/clock.h
+++ b/arch/arm/include/asm/arch-mx6/clock.h
@@ -48,5 +48,6 @@
 unsigned int mxc_get_clock(enum mxc_clock clk);
 void enable_usboh3_clk(unsigned char enable);
 int enable_sata_clock(void);
+int enable_i2c_clk(unsigned char enable, unsigned i2c_num);
 
 #endif /* __ASM_ARCH_CLOCK_H */