OMAP3: clock: fix incorrect rate display when switching MPU rate at boot

The OMAP3 clock code contains some legacy code to allow the MPU rate
to be specified as a kernel command line parameter.  If the 'mpurate'
parameter is specified, the kernel will attempt to switch the MPU rate
to this rate during boot.  As part of this process, a short message
"Switched to new clocking rate" is generated -- and in this message,
the "Core" clock rate and "MPU" clock rate are transposed.

This patch ensures that the clock rates are displayed in the correct
order.

Thanks to Bruno Guerin <br.guerin@free.fr> for reporting this bug and
proposing a fix.  Thanks to Richard Woodruff <r-woodruff2@ti.com> for
reviewing the problem and passing the report on.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Bruno Guerin <br.guerin@free.fr>
Cc: Richard Woodruff <r-woodruff2@ti.com>