ARM: prima2: l2x0: fix checkpatch issues

Fix the below checkpatch issues:

ERROR: open brace '{' following struct go on the same line
15: FILE: l2x0.c:15:
+struct l2x0_aux
+{

ERROR: Use of __initconst requires a separate use of const
20: FILE: l2x0.c:20:
+static struct l2x0_aux prima2_l2x0_aux __initconst = {

ERROR: Use of __initconst requires a separate use of const
25: FILE: l2x0.c:25:
+static struct l2x0_aux marco_l2x0_aux __initconst = {

ERROR: Use of __initconst requires a separate use of const
31: FILE: l2x0.c:31:
+static struct of_device_id sirf_l2x0_ids[] __initconst = {

Signed-off-by: Barry Song <Baohua.Song@csr.com>