generic: ar8216: remove support for Linux before version 6.1

Drop support for older kernel versions from legacy AR8216 switch driver.

Signed-off-by: Daniel Golle <[email protected]>

target/linux/generic/files/drivers/net/phy/ar8216.c

@@ -35,7 +35,6 @@
 #include <linux/lockdep.h>
 #include <linux/ar8216_platform.h>
 #include <linux/workqueue.h>
-#include <linux/version.h>
 
 #include "ar8216.h"
 
@@ -2458,11 +2457,7 @@ ar8xxx_phy_config_init(struct phy_device *phydev)
 	/* VID fixup only needed on ar8216 */
 	if (chip_is_ar8216(priv)) {
 		dev->phy_ptr = priv;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,1,0)
 		dev->priv_flags |= IFF_NO_IP_ALIGN;
-#else
-		dev->extra_priv_flags |= IFF_NO_IP_ALIGN;
-#endif
 		dev->eth_mangle_rx = ar8216_mangle_rx;
 		dev->eth_mangle_tx = ar8216_mangle_tx;
 	}
@@ -2697,11 +2692,7 @@ ar8xxx_phy_detach(struct phy_device *phydev)
 
 #ifdef CONFIG_ETHERNET_PACKET_MANGLE
 	dev->phy_ptr = NULL;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,1,0)
 	dev->priv_flags &= ~IFF_NO_IP_ALIGN;
-#else
-	dev->extra_priv_flags &= ~IFF_NO_IP_ALIGN;
-#endif
 	dev->eth_mangle_rx = NULL;
 	dev->eth_mangle_tx = NULL;
 #endif