regmap: cache: Remove unused 'blksize' variable

Commit 2cbbb579bcbe ("regmap: Add the LZO cache support") introduced
'blksize' in regcache_lzo_read() and regcache_lzo_write(), that is
set but not used. Compiling with W=1 gives the following warnings,
fix them.

drivers/base/regmap/regcache-lzo.c: In function ‘regcache_lzo_read’:
drivers/base/regmap/regcache-lzo.c:239:9: warning: variable ‘blksize’ set but not used [-Wunused-but-set-variable]
size_t blksize, tmp_dst_len;
^
drivers/base/regmap/regcache-lzo.c: In function ‘regcache_lzo_write’:
drivers/base/regmap/regcache-lzo.c:278:9: warning: variable ‘blksize’ set but not used [-Wunused-but-set-variable]
size_t blksize, tmp_dst_len;
^

These are harmless warnings and are only being fixed to reduce the
noise with W=1 in the kernel.

Fixes: 2cbbb579bcbe ("regmap: Add the LZO cache support")
Cc: Dimitris Papastamos <[e-mail]>
Cc: Mark Brown <[e-mail]>
Signed-off-by: Kirtika Ruchandani <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/base/regmap/regcache-lzo.c

···
 {
 	struct regcache_lzo_ctx *lzo_block, **lzo_blocks;
 	int ret, blkindex, blkpos;
-	size_t blksize, tmp_dst_len;
+	size_t tmp_dst_len;
 	void *tmp_dst;
 
 	/* index of the compressed lzo block */
 	blkindex = regcache_lzo_get_blkindex(map, reg);
 	/* register index within the decompressed block */
 	blkpos = regcache_lzo_get_blkpos(map, reg);
-	/* size of the compressed block */
-	blksize = regcache_lzo_get_blksize(map);
 	lzo_blocks = map->cache;
 	lzo_block = lzo_blocks[blkindex];
 
···
 {
 	struct regcache_lzo_ctx *lzo_block, **lzo_blocks;
 	int ret, blkindex, blkpos;
-	size_t blksize, tmp_dst_len;
+	size_t tmp_dst_len;
 	void *tmp_dst;
 
 	/* index of the compressed lzo block */
 	blkindex = regcache_lzo_get_blkindex(map, reg);
 	/* register index within the decompressed block */
 	blkpos = regcache_lzo_get_blkpos(map, reg);
-	/* size of the compressed block */
-	blksize = regcache_lzo_get_blksize(map);
 	lzo_blocks = map->cache;
 	lzo_block = lzo_blocks[blkindex];