kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 83 deletions

diff --git a/target/linux/layerscape/patches-5.4/701-net-0327-at803x-Address-packet-drops-at-low-traffic-rate-due-.patch b/target/linux/layerscape/patches-5.4/701-net-0327-at803x-Address-packet-drops-at-low-traffic-rate-due-.patch
deleted file mode 100644
index babecdecb7..0000000000
--- a/target/linux/layerscape/patches-5.4/701-net-0327-at803x-Address-packet-drops-at-low-traffic-rate-due-.patch
+++ /dev/null
@@ -1,83 +0,0 @@
-From 53c3bd0d5a873c23841bb95e7b95c1c3630c50bd Mon Sep 17 00:00:00 2001
-From: Vladimir Oltean <vladimir.oltean@nxp.com>
-Date: Thu, 12 Jul 2018 13:03:13 +0300
-Subject: [PATCH] at803x: Address packet drops at low traffic rate due to
- SmartEEE feature
-
-* According to the AR8035 datasheet, smartEEE mode (active by default)
-  makes the PHY enters sleep after a configurable idle time. It does
-  this autonomously, without LPI (Low Power Idle) signals coming from MAC.
-* Tested with ping (default of 1 second interval) over back-to-back
-  RGMII between 2 boards having AR8035 at both ends:
-    - Without patch:
-  225 packets transmitted, 145 received, 35% packet loss, time 229334ms
-    - With patch:
-  144 packets transmitted, 144 received, 0% packet loss, time 146378ms
-
-Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
----
- drivers/net/phy/Kconfig  | 10 ++++++++++
- drivers/net/phy/at803x.c | 22 ++++++++++++++++++++++
- 2 files changed, 32 insertions(+)
-
---- a/drivers/net/phy/Kconfig
-+++ b/drivers/net/phy/Kconfig
-@@ -363,6 +363,16 @@ config AT803X_PHY
- 	---help---
- 	  Currently supports the AT8030 and AT8035 model
- 
-+config AT803X_PHY_SMART_EEE
-+	depends on AT803X_PHY
-+	default n
-+	tristate "SmartEEE feature for AT803X PHYs"
-+	---help---
-+	  Enables the Atheros SmartEEE feature (not IEEE 802.3az). When 2 PHYs
-+	  which support this feature are connected back-to-back, they may
-+	  negotiate a low-power sleep mode autonomously, without the Ethernet
-+	  controller's knowledge.  May cause packet loss.
-+
- config BCM63XX_PHY
- 	tristate "Broadcom 63xx SOCs internal PHY"
- 	depends on BCM63XX || COMPILE_TEST
---- a/drivers/net/phy/at803x.c
-+++ b/drivers/net/phy/at803x.c
-@@ -62,6 +62,8 @@
- #define AT803X_DEBUG_REG_5			0x05
- #define AT803X_DEBUG_TX_CLK_DLY_EN		BIT(8)
- 
-+#define AT803X_LPI_EN				BIT(8)
-+
- #define ATH8030_PHY_ID 0x004dd076
- #define ATH8031_PHY_ID 0x004dd074
- #define ATH8032_PHY_ID 0x004dd023
-@@ -299,10 +301,30 @@ static int at803x_probe(struct phy_devic
- 	return ret;
- }
- 
-+static void at803x_enable_smart_eee(struct phy_device *phydev, int on)
-+{
-+	int value;
-+
-+	/* 5.1.11 Smart_eee control3 */
-+	value = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x805D);
-+	if (on)
-+		value |= AT803X_LPI_EN;
-+	else
-+		value &= ~AT803X_LPI_EN;
-+	phy_write_mmd(phydev, MDIO_MMD_PCS, 0x805D, value);
-+}
-+
- static int at803x_config_init(struct phy_device *phydev)
- {
- 	int ret;
- 
-+
-+#ifdef CONFIG_AT803X_PHY_SMART_EEE
-+	at803x_enable_smart_eee(phydev, 1);
-+#else
-+	at803x_enable_smart_eee(phydev, 0);
-+#endif
-+
- 	/* The RX and TX delay default is:
- 	 *   after HW reset: RX delay enabled and TX delay disabled
- 	 *   after SW reset: RX delay enabled, while TX delay retains the