Rename _FifoPut to _fifo_put

Updating nano kernel functions to follow a consistent naming convention.
Part of that process is the removal of camelCase naming conventions for the
preferred_underscore_method.

Change accomplished with the following script:

#!/bin/bash
echo "Searching for ${1} to replace with ${2}"
find . -type f \( -iname \*.c -o -iname \*.h -o -iname \*.s -o -iname \*.kconf \) \
       -not \( -path host/src/genIdt -prune \) \   \
       -not \( -path host/src/gen_tables -prune \) \
       -print | xargs sed -i "s/"${1}"/"${2}"/g"

Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>

kernel/nanokernel/core/nano_mwfifo.c

@@ -89,12 +89,12 @@ void nano_fifo_init(struct nano_fifo *chan /* channel to initialize */
 	chan->stat = 0;
 }
 
-FUNC_ALIAS(_FifoPut, nano_isr_fifo_put, void);
-FUNC_ALIAS(_FifoPut, nano_fiber_fifo_put, void);
+FUNC_ALIAS(_fifo_put, nano_isr_fifo_put, void);
+FUNC_ALIAS(_fifo_put, nano_fiber_fifo_put, void);
 
 /*******************************************************************************
 *
-* _FifoPut - add an element to the end of a fifo
+* _fifo_put - add an element to the end of a fifo
 *
 * This routine adds an element to the end of a fifo object; it may be called
 * from either either a fiber or an ISR context.   A fiber pending on the fifo
@@ -112,7 +112,7 @@ FUNC_ALIAS(_FifoPut, nano_fiber_fifo_put, void);
 * without introducing a source code migration issue.
 */
 
-void _FifoPut(struct nano_fifo *chan, /* channel on which to interact */
+void _fifo_put(struct nano_fifo *chan, /* channel on which to interact */
 			    void *data       /* data to send */
 			    )
 {