[MIPS] klconfig add missing bracket

Signed-off-by: NMariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

include/asm-mips/sn/klconfig.h

@@ -176,7 +176,7 @@ typedef struct kl_config_hdr {
 /* --- New Macros for the changed kl_config_hdr_t structure --- */
 
 #define PTR_CH_MALLOC_HDR(_k)   ((klc_malloc_hdr_t *)\
-			(unsigned long)_k + (_k->ch_malloc_hdr_off)))
+			((unsigned long)_k + (_k->ch_malloc_hdr_off)))
 
 #define KL_CONFIG_CH_MALLOC_HDR(_n)   PTR_CH_MALLOC_HDR(KL_CONFIG_HDR(_n))