sparc: fix unused variable warnings

Fix the build warnings:
board.c: In function 'board_init_f':
board.c:179:8: warning: unused variable 'e'
board.c:178:6: warning: unused variable 'i'
board.c:173:13: warning: unused variable 'cmdtp'
bootm.c: In function 'do_bootm_linux':
bootm.c:101:28: warning: unused variable 'kernend'
bootm.c:101:15: warning: unused variable 'initrd_addr'
bootm.c💯26: warning: unused variable 'checksum'
bootm.c💯21: warning: unused variable 'len'
bootm.c💯15: warning: unused variable 'data'

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/sparc/lib/board.c

@@ -165,13 +165,10 @@ char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n";
 
 void board_init_f(ulong bootflag)
 {
-	cmd_tbl_t *cmdtp;
 	bd_t *bd;
 	unsigned char *s;
 	init_fnc_t **init_fnc_ptr;
 	int j;
-	int i;
-	char *e;
 
 #ifndef CONFIG_SYS_NO_FLASH
 	ulong flash_size;

arch/sparc/lib/bootm.c

@@ -97,8 +97,6 @@ int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t * im
 	char *bootargs;
 	ulong initrd_start, initrd_end;
 	ulong rd_len;
-	unsigned int data, len, checksum;
-	unsigned int initrd_addr, kernend;
 	void (*kernel) (struct linux_romvec *, void *);
 	struct lmb *lmb = &images->lmb;
 	int ret;