Currently, e2600ac-c1 cannot be built as the kernel is larger than the defined KERNEL_SIZE,
however, there is no bootloader limit for the kernel size so remove KERNEL_SIZE completely.
Signed-off-by: 张 鹏 <sd20@qxwlan.com>
[ improve commit title, fix merge conflict ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit b764268acb7ed410d1d81e783f1b0ce407efda82)