Staging: spectra: initializa lblk variable

Fix a compile warning by initializaing lblk. Since FTL_Get_Block_Index()
returns BAD_BLOCK if it doesn't find the logical block number, lblk
number is initizalized to BAD_BLOCK.
Signed-off-by: NJavier Martinez Canillas <martinez.javier@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/spectra/flash.c

@@ -1698,7 +1698,7 @@ static int get_l2_cache_blks(void)
 static int erase_l2_cache_blocks(void)
 {
 	int i, ret = PASS;
-	u32 pblk, lblk;
+	u32 pblk, lblk = BAD_BLOCK;
 	u64 addr;
 	u32 *pbt = (u32 *)g_pBlockTable;