rampis: mt7621: resize Edgerouter-X kernel size to 6MB
With the updated partition layout set in dts, set the KERNEL_SIZE
parameter to 6MB allowing builds of Linux 6.1 and later to fit.
Signed-off-by: Tim Lunn <[email protected]>
Tested-by: Mauri Sandberg <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/15194
(cherry picked from commit 09a6bffb6e0a714f20d71043ae8382af4c5925b6)
Link: https://github.com/openwrt/openwrt/pull/17097
Signed-off-by: Petr Štetiar <[email protected]>