YAFFS2: fs/yaffs2/yaffs_nand.[hc] - fix build warnings

Fix these:
yaffs_guts.c: In function 'yaffs_Scan':
yaffs_guts.c:5436: warning: pointer targets in passing argument 4 of 'yaffs_QueryInitialBlockState' differ in signedness
yaffs_guts.c: In function 'yaffs_ScanBackwards':
yaffs_guts.c:6017: warning: pointer targets in passing argument 4 of 'yaffs_QueryInitialBlockState' differ in signedness
yaffs_nand.c: In function 'yaffs_QueryInitialBlockState':
yaffs_nand.c:109: warning: pointer targets in passing argument 4 of 'dev->queryNANDBlock' differ in signedness
yaffs_nand.c:113: warning: pointer targets in passing argument 4 of 'yaffs_TagsCompatabilityQueryNANDBlock' differ in signedness

Signed-off-by: Wolfgang Denk <wd@denx.de>

fs/yaffs2/yaffs_nand.c

@@ -101,7 +101,7 @@ int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo)
 int yaffs_QueryInitialBlockState(yaffs_Device * dev,
 						 int blockNo,
 						 yaffs_BlockState * state,
-						 unsigned *sequenceNumber)
+						 int *sequenceNumber)
 {
 	blockNo -= dev->blockOffset;
 

fs/yaffs2/yaffs_nand.h

@@ -33,7 +33,7 @@ int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo);
 int yaffs_QueryInitialBlockState(yaffs_Device * dev,
 						 int blockNo,
 						 yaffs_BlockState * state,
-						 unsigned *sequenceNumber);
+						 int *sequenceNumber);
 
 int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
 				  int blockInNAND);