arm64: insn: move AARCH64_INSN_SIZE into <asm/insn.h>

For histroical reasons, we define AARCH64_INSN_SIZE in
<asm/alternative-macros.h>, but it would make more sense to do so in
<asm/insn.h>. Let's move it into <asm/insn.h>, and add the necessary
include directives for this.

Signed-off-by: Mark Rutland <[e-mail]>
Cc: Catalin Marinas <[e-mail]>
Cc: Will Deacon <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Will Deacon <[e-mail]>

arch/arm64/include/asm/alternative-macros.h

···
 #define __ASM_ALTERNATIVE_MACROS_H
 
 #include <asm/cpucaps.h>
+#include <asm/insn.h>
 
 #define ARM64_CB_PATCH ARM64_NCAPS
-
-/* A64 instructions are always 32 bits. */
-#define	AARCH64_INSN_SIZE		4
 
 #ifndef __ASSEMBLY__
 

arch/arm64/include/asm/insn.h

···
 
 #include <asm/alternative.h>
 
+/* A64 instructions are always 32 bits. */
+#define	AARCH64_INSN_SIZE		4
+
 #ifndef __ASSEMBLY__
 /*
  * ARM Architecture Reference Manual for ARMv8 Profile-A, Issue A.a

arch/arm64/include/asm/kvm_asm.h

···
 #define __ARM_KVM_ASM_H__
 
 #include <asm/hyp_image.h>
+#include <asm/insn.h>
 #include <asm/virt.h>
 
 #define ARM_EXIT_WITH_SERROR_BIT  31

arch/arm64/kernel/cpufeature.c

···
 #include <asm/cpufeature.h>
 #include <asm/cpu_ops.h>
 #include <asm/fpsimd.h>
+#include <asm/insn.h>
 #include <asm/kvm_host.h>
 #include <asm/mmu_context.h>
 #include <asm/mte.h>

arch/arm64/kernel/patching.c

···
 
 #include <asm/cacheflush.h>
 #include <asm/fixmap.h>
+#include <asm/insn.h>
 #include <asm/kprobes.h>
 #include <asm/patching.h>
 #include <asm/sections.h>

arch/arm64/kernel/traps.c

···
 #include <asm/esr.h>
 #include <asm/exception.h>
 #include <asm/extable.h>
+#include <asm/insn.h>
 #include <asm/kprobes.h>
 #include <asm/patching.h>
 #include <asm/traps.h>

arch/arm64/net/bpf_jit_comp.c

···
 #include <asm/byteorder.h>
 #include <asm/cacheflush.h>
 #include <asm/debug-monitors.h>
+#include <asm/insn.h>
 #include <asm/set_memory.h>
 
 #include "bpf_jit.h"