mips: octeon: octeon-model.h: Enable inclusion from assembler files

Add the #ifdef __ASSEMBLY__ checks to enable inclusion of this header
from assembler files.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/mips/mach-octeon/include/mach/octeon-model.h b/arch/mips/mach-octeon/include/mach/octeon-model.h
index a346b34..22d6df6 100644
--- a/arch/mips/mach-octeon/include/mach/octeon-model.h
+++ b/arch/mips/mach-octeon/include/mach/octeon-model.h
@@ -262,6 +262,8 @@
 		  )));							\
 	})
 
+#ifndef __ASSEMBLY__
+
 #ifndef OCTEON_IS_MODEL
 
 static inline int __octeon_is_model_runtime_internal__(u32 model)
@@ -310,4 +312,6 @@
 	return (read_c0_prid() & OCTEON_FAMILY_MASK);
 }
 
+#endif /* __ASSEMBLY__ */
+
 #endif /* __OCTEON_MODEL_H__ */