Add the entropy pool

Signed-off-by: Sam Phippen <samphippen@googlemail.com>
Make the timersource work with the entropy pool

Signed-off-by: Sam Phippen <samphippen@googlemail.com>
An update

Signed-off-by: Sam Phippen <samphippen@googlemail.com>
makefile udpates

Signed-off-by: Sam Phippen <samphippen@googlemail.com>