Fixes:
arch/ppc/boards/freescale-p1022ds/ddr.c: In function 'fsl_ddr_board_info':
arch/ppc/boards/freescale-p1022ds/ddr.c:39:21: warning: assignment discards 'const' qualifier from pointer target type [enabled by default]
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>