Fix PRCM_SYSCONFIG & PRCM_REVISION addresses for 24XX

Fix OMAP24XX_PRCM_REVISION and OMAP24XX_PRCM_SYSCONFIG addresses,
which were incorrectly using 3430 PRM_{REVISION,SYSCONFIG} addresses.
Bug found by Richard Woodruff <r-woodruff2@ti.com>.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>