arch: arm64: dts: set correct phy-connection-type for aqr107 10G phy

When kernel boots up, there is below warning calltrace:
Call trace:
 aqr107_config_init+0xc8/0xd0
 phy_init_hw+0x74/0xd0
 phy_attach_direct+0x15c/0x304
 phy_connect_direct+0x34/0x90
 of_phy_connect+0x6c/0xbc
 memac_init_phy+0xac/0x178
 dpa_start+0x3c/0x134
 dpa_eth_priv_start+0xac/0xe0
 __dev_open+0x12c/0x1e0
 __dev_change_flags+0x1a0/0x220
 dev_change_flags+0x30/0x70
 ip_auto_config+0x278/0xf58
 do_one_initcall+0x68/0x2b0
 kernel_init_freeable+0x224/0x294
 kernel_init+0x30/0x140
 ret_from_fork+0x10/0x20
---[ end trace 6f8edddc9839b049 ]---
This issue is introduced by upsteam commit ce64c1f7("net: phy:
aquantia: add USXGMII support and warn if XGMII mode is set ").
Therefore, set the correct phy-connection-type"usxgmii" aqr107 10G
Phy to avoid the warning calltrace.

Signed-off-by: Meng Li <Meng.Li@windriver.com>

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>