MIPS: VZ: Only include loongson_regs.h for CPU_LOONGSON64

Only Loongson64 platform has and needs loongson_regs.h, including it
unconditionally will cause build errors.

Fixes: 7f2a83f ("KVM: MIPS: Add CPUCFG emulation for Loongson-3")
Cc: [email protected]
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>

Author: chenhuacai

arch/mips/kvm/vz.c

@@ -29,7 +29,9 @@
 #include <linux/kvm_host.h>
 
 #include "interrupt.h"
+#ifdef CONFIG_CPU_LOONGSON64
 #include "loongson_regs.h"
+#endif
 
 #include "trace.h"