Set parameter on OS_SelectFdIsSet should be const

[jphickey]

Is your feature request related to a problem? Please describe.
This function only checks bits (read only), it does not modify the "Set" argument

Describe the solution you'd like
The pointer should be qualified const

Additional context
#854 (part of CFS-38 review) corrected the internal function, but it looks like this one was missed.
It is part of the public API but adding const here shouldn't break anything.

Requester Info
Joseph Hickey, Vantage Systems, Inc.

[jphickey]

Note: prototype to correct is here:

osal/src/os/inc/osapi-select.h

Line 164 in 6776050

bool OS_SelectFdIsSet(OS_FdSet *Set, osal_id_t objid);