net: phy: Replace PHY_ANEG_TIMEOUT with Kconfig symbol

Switch PHY_ANEG_TIMEOUT to CONFIG_PHY_ANEG_TIMEOUT Kconfig symbol.
This removes one more configuration headers option finalizes its
Kconfig symbol conversion. No functional change expected.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/configs/hmibsc_defconfig b/configs/hmibsc_defconfig
index a076898..b924885 100644
--- a/configs/hmibsc_defconfig
+++ b/configs/hmibsc_defconfig
@@ -61,6 +61,8 @@
 CONFIG_LED_GPIO=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_MSM=y
+CONFIG_PHYLIB=y
+CONFIG_PHY_ANEG_TIMEOUT=8000
 CONFIG_PHY=y
 CONFIG_PINCTRL=y
 CONFIG_PINCONF=y