net: phy: micrel: Fix lan8814_config_init

net: phy: micrel: Fix lan8814_config_init

The blamed commit introduced the function lanphy_modify_page_reg which
as name suggests it, it modifies the registers. In the same commit we
have started to use this function inside the drivers. The problem is
that in the function lan8814_config_init we passed the wrong page number
when disabling the aneg towards host side. We passed extended page number
4(LAN8814_PAGE_COMMON_REGS) instead of extended page
5(LAN8814_PAGE_PORT_REGS)

Fixes: a0de636ed7a264 ("net: phy: micrel: Introduce lanphy_modify_page_reg")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250925064702.3906950-1-horatiu.vultur@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>