net: phy: ti: Convert to U_BOOT_PHY_DRIVER()

net: phy: ti: Convert to U_BOOT_PHY_DRIVER()

Convert PHY driver to U_BOOT_PHY_DRIVER() macro and drop phy_register() init call.

Converted using sed
"s@^static struct phy_driver \(.*\)_driver = \+{@U_BOOT_PHY_DRIVER(\L\1) = {"

This particular PHY driver is slightly more spread out across additional
source files. Since the phy_register() calls are no longer necessary, all
the registration calls across those source files is dropped. Furthermore,
the Makefile can now be updated to only compile generic TI PHY support if
matching Kconfig symbol is enabled and the ifdeffery in the generic TI PHY
driver can be dropped.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Acked-by: Michal Simek <michal.simek@amd.com>
Tested-by: Michal Simek <michal.simek@amd.com> #microblaze (MANUAL_RELOC)