target/breakpoints: fix types in watchpoint_add_internal()

There was a conflict:
1. commit 2cd8ebf ("breakpoints: use 64-bit type for watchpoint mask
   and value")
2. commit 0bf3373 ("target/breakpoints: Use 'unsigned int' for
   length")

The second commit was created erlier, but merged later so the types of
`mask` and `value` became `uint32_t` in `watchpoint_add_internal()`.

This created a bug:
`WATCHPOINT_IGNORE_DATA_VALUE_MASK` is defined as `(~(uint64_t)0)`.
Truncation to uint32_t makes it so the comparisons with the constant
don't work.

Change-Id: I19c414c351f52aff72a60330d83c29db7bbca375
Signed-off-by: Evgeniy Naydanov <evgeniy.naydanov@syntacore.com>

src/target/breakpoints.c

@@ -542,7 +542,7 @@ struct breakpoint *breakpoint_find(struct target *target, target_addr_t address)
 }
 
 static int watchpoint_add_internal(struct target *target, target_addr_t address,
-		unsigned int length, enum watchpoint_rw rw, uint32_t value, uint32_t mask)
+		unsigned int length, enum watchpoint_rw rw, uint64_t value, uint64_t mask)
 {
 	struct watchpoint *watchpoint = target->watchpoints;
 	struct watchpoint **watchpoint_p = &target->watchpoints;