Staging: rt2860: rt_linux.h: Fix space after unary '*' operator.

Fix checkpatch error raised by the use of spaces between the '*' operator and
the corresponding variable name.

Signed-off-by: L. Alberto Giménez <agimenez@sysvalve.es>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>