HLS: Inlining functions which do fifo.read, fifo.write
HLS: Inlining functions which do fifo.read, fifo.write

Signed-off-by: Frank Haverkamp <ead9589793120d6abd41dc830e46c3a946a6de96@linux.vnet.ibm.com>

open-power/snap,open-power/snap,open-power/snap,open-power/snap,open-power/snap