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, 68 deletions

diff --git a/target/linux/layerscape/patches-5.4/802-can-0015-can-flexcan-flexcan_read_reg_iflag_rx-optimize-readi.patch b/target/linux/layerscape/patches-5.4/802-can-0015-can-flexcan-flexcan_read_reg_iflag_rx-optimize-readi.patch
deleted file mode 100644
index c7e5e4ec4f..0000000000
--- a/target/linux/layerscape/patches-5.4/802-can-0015-can-flexcan-flexcan_read_reg_iflag_rx-optimize-readi.patch
+++ /dev/null
@@ -1,68 +0,0 @@
-From 74920ba156136a58dd3411c02d429d4f31497dc0 Mon Sep 17 00:00:00 2001
-From: Marc Kleine-Budde <mkl@pengutronix.de>
-Date: Fri, 1 Mar 2019 15:38:05 +0100
-Subject: [PATCH] can: flexcan: flexcan_read_reg_iflag_rx(): optimize reading
-
-The flexcan IP core has up to 64 mailboxes, each one has a corresponding
-interrupt bit in the iflag1 or iflag2 registers and a mask bit in the
-imask1 or imask2 registers.
-
-In the timestamp (i.e. non FIFO) mode the driver needs to mask all non RX
-interrupt sources, it uses the precomputed value rx_mask of struct flexcan_priv
-for this.
-
-In certain use cases, for example the CANFD mode, the contents of the iflag2
-register is completely masked.
-
-This patch optimizes the flexcan_read_reg_iflag_rx() function by not reading
-the iflag1 or iflag2 register if the contents is masked.
-
-Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
----
- drivers/net/can/flexcan.c | 28 +++++++++++++++++-----------
- 1 file changed, 17 insertions(+), 11 deletions(-)
-
---- a/drivers/net/can/flexcan.c
-+++ b/drivers/net/can/flexcan.c
-@@ -786,6 +786,23 @@ static void flexcan_irq_state(struct net
- 		dev->stats.rx_fifo_errors++;
- }
- 
-+static inline u64 flexcan_read64_mask(struct flexcan_priv *priv, void __iomem *addr, u64 mask)
-+{
-+	u64 reg = 0;
-+
-+	if (upper_32_bits(mask))
-+		reg = (u64)priv->read(addr - 4) << 32;
-+	if (lower_32_bits(mask))
-+		reg |= priv->read(addr);
-+
-+	return reg & mask;
-+}
-+
-+static inline u64 flexcan_read_reg_iflag_rx(struct flexcan_priv *priv)
-+{
-+	return flexcan_read64_mask(priv, &priv->regs->iflag1, priv->rx_mask);
-+}
-+
- static inline struct flexcan_priv *rx_offload_to_priv(struct can_rx_offload *offload)
- {
- 	return container_of(offload, struct flexcan_priv, offload);
-@@ -880,17 +897,6 @@ static struct sk_buff *flexcan_mailbox_r
- 	return skb;
- }
- 
--static inline u64 flexcan_read_reg_iflag_rx(struct flexcan_priv *priv)
--{
--	struct flexcan_regs __iomem *regs = priv->regs;
--	u64 iflag;
--
--	iflag = (u64)priv->read(&regs->iflag2) << 32 |
--		priv->read(&regs->iflag1);
--
--	return iflag & priv->rx_mask;
--}
--
- static irqreturn_t flexcan_irq(int irq, void *dev_id)
- {
- 	struct net_device *dev = dev_id;