[openwrt/openwrt] mac80211: Fix brcmfmac compile on layerscape/armv8_64b

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch openwrt-18.06:
https://git.openwrt.org/7cbbab7246b43209a6d940f3a35c9f9a364a0572

commit 7cbbab7246b43209a6d940f3a35c9f9a364a0572
Author: Hauke Mehrtens <hauke at hauke-m.de>
AuthorDate: Wed Nov 11 21:09:58 2020 +0100

    mac80211: Fix brcmfmac compile on layerscape/armv8_64b
    
    DMI_PRODUCT_SKU is only available with kernel >= 4.18.
    
    Fixes: 2cd234d96bd7 ("mac80211: brcmfmac: backport important fixes from kernel 5.2")
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 ...rcmfmac-add-DMI_PRODUCT_SKU-conditionally.patch | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/package/kernel/mac80211/patches/478-brcmfmac-add-DMI_PRODUCT_SKU-conditionally.patch b/package/kernel/mac80211/patches/478-brcmfmac-add-DMI_PRODUCT_SKU-conditionally.patch
new file mode 100644
index 0000000000..3b1c22bb08
--- /dev/null
+++ b/package/kernel/mac80211/patches/478-brcmfmac-add-DMI_PRODUCT_SKU-conditionally.patch
@@ -0,0 +1,22 @@
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
+@@ -53,7 +53,9 @@ static const struct dmi_system_id dmi_pl
+ 		.matches = {
+ 			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
+ 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
++#if LINUX_VERSION_IS_GEQ(4,18,0)
+ 			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T8"),
++#endif
+ 			/* also match on somewhat unique bios-version */
+ 			DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"),
+ 		},
+@@ -64,7 +66,9 @@ static const struct dmi_system_id dmi_pl
+ 		.matches = {
+ 			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
+ 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
++#if LINUX_VERSION_IS_GEQ(4,18,0)
+ 			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T11"),
++#endif
+ 			/* also match on somewhat unique bios-version */
+ 			DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"),
+ 		},