MIPS: Octeon: Use I/O clock rate for calculations.

The I2C and UARTS are clocked by the I/O clock, use its rate for these
devices.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1670/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index c32d40d..49c3320 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -199,7 +199,7 @@
 		num_ports = 1;
 
 	for (port = 0; port < num_ports; port++) {
-		octeon_i2c_data[port].sys_freq = octeon_get_clock_rate();
+		octeon_i2c_data[port].sys_freq = octeon_get_io_clock_rate();
 		/*FIXME: should be examined. At the moment is set for 100Khz */
 		octeon_i2c_data[port].i2c_freq = 100000;