mx27: add i2c clock

Signed-off-by: Eric Jarrige <eric.jarrige@armadeus.org>
Signed-off-by: Philippe Reynes <tremyfr@yahoo.fr>
diff --git a/arch/arm/cpu/arm926ejs/mx27/generic.c b/arch/arm/cpu/arm926ejs/mx27/generic.c
index bffbadd..a9a13cb 100644
--- a/arch/arm/cpu/arm926ejs/mx27/generic.c
+++ b/arch/arm/cpu/arm926ejs/mx27/generic.c
@@ -159,6 +159,8 @@
 	switch (clk) {
 	case MXC_ARM_CLK:
 		return imx_get_armclk();
+	case MXC_I2C_CLK:
+		return imx_get_ahbclk()/2;
 	case MXC_UART_CLK:
 		return imx_get_perclk1();
 	case MXC_FEC_CLK:
diff --git a/arch/arm/include/asm/arch-mx27/clock.h b/arch/arm/include/asm/arch-mx27/clock.h
index fd062d3..2b03a41 100644
--- a/arch/arm/include/asm/arch-mx27/clock.h
+++ b/arch/arm/include/asm/arch-mx27/clock.h
@@ -26,6 +26,7 @@
 
 enum mxc_clock {
 	MXC_ARM_CLK,
+	MXC_I2C_CLK,
 	MXC_UART_CLK,
 	MXC_ESDHC_CLK,
 	MXC_FEC_CLK,