Watcher noc sanitization to check for multicast to self

[tt-dma]

Multicast to range including self is an invalid transaction, check for this in noc sanitize

[tt-dma]

There's a specific API that allows this, so let that through

[tt-aho]

Just to clarify, multicasting to a range including self is a valid transaction for either api, and is something we did in matmuls. It's the value for num_dests that differs.

The two cases are:

• Loopback multicast: This will write the data to self as well, so the num_dests argument should count self. Ex mcasting to 8x8 grid with self, num_mcast_dests should be 64
• Regular/non-loopback multicast: This won't write data to self. Self can be part of the range but data won't be written to it, and num_dests should not count self. Ex mcasting to 8x8 grid with self, num_mcast_dests should be 63. Need to check that the grid is not just self though.