[openwrt/openwrt] broadcom-wl: fix compilation with 4.14

[LEDE Commits]

jogo pushed a commit to openwrt/openwrt.git, branch master:
https://git.lede-project.org/592472f60f7b79e824ce91a57b52976c5f174f28

commit 592472f60f7b79e824ce91a57b52976c5f174f28
Author: Jonas Gorski <jonas.gorski at gmail.com>
AuthorDate: Sat Jan 13 18:44:04 2018 +0100

    broadcom-wl: fix compilation with 4.14
    
    The last_rx field was removed from net_device. Since the field wasn't
    used by the generic subsystem, and the driver only writes to it, just
    remove the usage.
    
    Signed-off-by: Jonas Gorski <jonas.gorski at gmail.com>
---
 .../kernel/broadcom-wl/patches/040-remove_last_rx_usage.patch  | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/package/kernel/broadcom-wl/patches/040-remove_last_rx_usage.patch b/package/kernel/broadcom-wl/patches/040-remove_last_rx_usage.patch
new file mode 100644
index 0000000..9f4b0b0
--- /dev/null
+++ b/package/kernel/broadcom-wl/patches/040-remove_last_rx_usage.patch
@@ -0,0 +1,10 @@
+--- broadcom-wl-5.10.56.27.3/driver/wl_linux.c.orig	2018-01-13 18:25:14.944667645 +0100
++++ broadcom-wl-5.10.56.27.3/driver/wl_linux.c	2018-01-13 18:25:25.836667888 +0100
+@@ -2762,7 +2762,6 @@
+ 	bcopy(oskb->data + D11_PHY_HDR_LEN, pdata, oskb->len - D11_PHY_HDR_LEN);
+ 
+ 	skb->dev = wl->monitor;
+-	skb->dev->last_rx = jiffies;
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 22)
+ 	skb_reset_mac_header(skb);
+ #else