A few hand-written function names in printf strings could be updated to use __func__

[thnkslprpt]

Checklist

• I reviewed the Contributing Guide.
• I performed a cursory search to see if the bug report is relevant, not redundant, nor in conflict with other tickets.

Describe the bug
There are a few remaining locations in PSP that use hand-written function names in the printf() message strings.

Code snips

PSP/fsw/pc-rtems/src/cfe_psp_support.c

Line 83 in 6fceb13

OS_printf("CFE_PSP_Restart is not implemented on this platform ( yet ! )\n");

PSP/fsw/pc-linux/src/cfe_psp_support.c

Line 131 in 6fceb13

OS_printf("CFE_PSP_Panic Called with error code = 0x%08X. Exiting.\n", (unsigned int)ErrorCode);

Expected behavior
Use the __func__ predefined identifier where possible to lower future dependencies to updating hand-written comments.

Reporter Info
Avi Weiss @thnkslprpt