amlogic: board p212: Fix Ethernet PHY init

Without this patch the Ethernet PHY on the p212 board does not get
fully configured.
When this happens Ethernet does not function.

The similar libretech-cc and khadas-vim boards have this code already.
That's why the Ethernet on these boards do work.

Signed-off-by: Jasper Kcoding <jasperkcoding@gmail.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/board/amlogic/p212/p212.c b/board/amlogic/p212/p212.c
index 06c2eae..00e07d7 100644
--- a/board/amlogic/p212/p212.c
+++ b/board/amlogic/p212/p212.c
@@ -29,7 +29,8 @@
 	char serial[EFUSE_SN_SIZE];
 	ssize_t len;
 
-	meson_gx_eth_init(PHY_INTERFACE_MODE_RMII, 0);
+	meson_gx_eth_init(PHY_INTERFACE_MODE_RMII,
+			  MESON_GXL_USE_INTERNAL_RMII_PHY);
 
 	if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
 		len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,