[SPARC]: Set sparse arch defines explicitly.

arch/sparc/Makefile

@@ -13,6 +13,7 @@
 
 AS              := $(AS) -32
 LDFLAGS		:= -m elf32_sparc
+CHECK		:= $(CHECK) -D__sparc__=1
 
 #CFLAGS := $(CFLAGS) -g -pipe -fcall-used-g5 -fcall-used-g7
 CFLAGS := $(CFLAGS) -m32 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7

arch/sparc64/Makefile

@@ -8,6 +8,8 @@
 # Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
 #
 
+CHECK		:= $(CHECK) -D__sparc__=1 -D__sparc_v9__=1
+
 AFLAGS_vmlinux.lds.o += -Usparc
 
 CC		:= $(shell if $(CC) -m64 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo $(CC); else echo sparc64-linux-gcc; fi )