mac80211: fix build regressions on linux 6.1

Signed-off-by: Felix Fietkau <[email protected]>

package/kernel/mac80211/patches/build/120-headers_version_fix.patch

@@ -0,0 +1,25 @@
+--- a/backport-include/linux/random.h
++++ b/backport-include/linux/random.h
+@@ -23,7 +23,7 @@ static inline u16 get_random_u16(void)
+ }
+ #endif
+ 
+-#if LINUX_VERSION_IS_LESS(6,2,0)
++#if LINUX_VERSION_IS_LESS(6,1,4)
+ static inline u32 __get_random_u32_below(u32 ceil)
+ {
+ 	/*
+--- a/backport-include/net/dropreason.h
++++ b/backport-include/net/dropreason.h
+@@ -3,10 +3,9 @@
+ 
+ #include <linux/version.h>
+ 
++#include <net/dropreason-core.h>
+ #if LINUX_VERSION_IS_GEQ(6,0,0)
+ #include_next <net/dropreason.h>
+-#else
+-#include <net/dropreason-core.h>
+ #endif
+ 
+ #if LINUX_VERSION_IS_LESS(6,4,0)

package/kernel/mac80211/patches/build/130-iommu_backport.patch

@@ -0,0 +1,26 @@
+--- /dev/null
++++ b/backport-include/linux/iommu.h
+@@ -0,0 +1,23 @@
++#ifndef __BACKPORT_LINUX_IOMMU_H
++#define __BACKPORT_LINUX_IOMMU_H
++
++#include_next <linux/iommu.h>
++#include <linux/version.h>
++
++#if LINUX_VERSION_IS_LESS(6,3,0)
++
++static inline int LINUX_BACKPORT(iommu_map)(struct iommu_domain *domain,
++					    unsigned long iova,
++					    phys_addr_t paddr, size_t size,
++					    int prot, gfp_t gfp)
++{
++	if (gfp == GFP_ATOMIC)
++		return iommu_map_atomic(domain, iova, paddr, size, prot);
++
++	return iommu_map(domain, iova, paddr, size, prot);
++}
++#define iommu_map LINUX_BACKPORT(iommu_map)
++
++#endif /* < 6.3 */
++
++#endif