qca-ssdk: enable AQR for ipq60xx targets

qca-ssdk: enable AQR for ipq60xx targets

MR7500 features IPQ6018 which is CPPE, however, it also utilizes AQR114CB0 as WAN.
Previously, without this patch, aquantia_phy_api_ops was never called.
Therefore, enable `IN_AQUATIA_PHY` so that AQR PHY gets initialized properly on boot.

[    3.973942] Aquantia AQR114C 90000.mdio-1:08: loading firmware version 'v5.6.5 Cybertan Divo 090221 14:43:44' from 'NVMEM'
[   16.059953] aquantia_phy_api_ops_init[1485]:INFO:qca probe aquantia phy driver succeeded!
[   17.930149] Aquantia AQR114C 90000.mdio-1:08: attached PHY driver (mii_bus:phy_addr=90000.mdio-1:08, irq=POLL)

Signed-off-by: Weikai Kong <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18185
Signed-off-by: Robert Marko <[email protected]>