iplink_can: fix coding style for pointer format

iplink_can: fix coding style for pointer format

checkpatch.pl complains about the pointer symbol * being attached to the
type instead of being attached to the variable:

  ERROR: "foo* bar" should be "foo *bar"
  #85: FILE: ip/iplink_can.c:85:
  +		       const char* name)

  ERROR: "foo* bar" should be "foo *bar"
  #93: FILE: ip/iplink_can.c:93:
  +static void print_ctrlmode(enum output_type t, __u32 flags, const char* key)

Fix those two warnings.

Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>