net: macb: remove gap in MACB_CAPS_* flags

net: macb: remove gap in MACB_CAPS_* flags

MACB_CAPS_* are bit constants that get used in bp->caps. They occupy
bits 0..12 + 24..31. Remove 11..23 gap by moving bits 24..31 to 13..20.

Occupation bitfields:

   31  29  27  25  23  21  19  17  15  13  11  09  07  05  03  01
     30  28  26  24  22  20  18  16  14  12  10  08  06  04  02  00
   -- Before ------------------------------------------------------
    1 1 1 1 1 1 1 1                       1 1 1 1 1 1 1 1 1 1 1 1 1
                    0 0 0 0 0 0 0 0 0 0 0
   -- After -------------------------------------------------------
                          1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
    0 0 0 0 0 0 0 0 0 0 0

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://patch.msgid.link/20251014-macb-cleanup-v1-3-31cd266e22cd@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>