[SPARC32]: asm/system.h needs asm/smp.h

To get hard_smp_processor_id() even on UP builds.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/asm-sparc/system.h

@@ -11,6 +11,7 @@
 #include <asm/psr.h>
 #include <asm/ptrace.h>
 #include <asm/btfixup.h>
+#include <asm/smp.h>
 
 #ifndef __ASSEMBLY__