qualcommbe: v6.12: update PCS patches to use .pcs_validate()

qualcommbe: v6.12: update PCS patches to use .pcs_validate()

The original PCS driver did not use the .pcs_validate() in
phylink_pcs_ops. The patches for 1000/2500base-x and 10g modes were
taken from this old driver, and thus did not bother with
.pcs_validate(). Thus, even though these modes are supported, phylink
would not enable them.

To fix these, list these modes in .pcs_validate(). Also list them in
ipq_pcs_clk_rate_get(). While the latter does not appear to change
behavior, it does change the clock rates listed under
/sys/kernel/debug/clk

Co-developed-by: Mantas Pucka <[email protected]>
Signed-off-by: Alexandru Gagniuc <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18435
Signed-off-by: Robert Marko <[email protected]>