arm64: Add missing header <asm/smp.h> in two files

Add missing header <asm/smp.h> on include/asm/smp_plat.h, as it calls function
cpu_logical_map(). Also include it on kernel/cpufeature.c since it has calls to
functions cpu_panic_kernel() and cpu_die_early().

Both files call functions defined on this header, make the header dependencies
less fragile.

Signed-off-by: Carlos Bilbao <[e-mail]>
Acked-by: Mark Rutland <[e-mail]>
Link: https://lore.kernel.org/r/4325940.LvFx2qVVIh@iron-maiden
Signed-off-by: Will Deacon <[e-mail]>

arch/arm64/include/asm/smp_plat.h

···
 
 #include <linux/cpumask.h>
 
+#include <asm/smp.h>
 #include <asm/types.h>
 
 struct mpidr_hash {

arch/arm64/kernel/cpufeature.c

···
 #include <asm/mmu_context.h>
 #include <asm/mte.h>
 #include <asm/processor.h>
+#include <asm/smp.h>
 #include <asm/sysreg.h>
 #include <asm/traps.h>
 #include <asm/virt.h>