samples: configure philosophers with more than 32 priorities

To have one project use more than 32 priorities. The preempt priorities
are also aligned so that they straddle two priority bitmaps.

Change-Id: I0f0862110d876e40fde45a0d105b769e8603d644
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>

samples/philosophers/prj.conf

diff --git a/samples/philosophers/prj.conf b/samples/philosophers/prj.conf
index 3e577b4..ef7f1ec 100644
--- a/samples/philosophers/prj.conf
+++ b/samples/philosophers/prj.conf
@@ -3,5 +3,5 @@
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_ASSERT=y
 CONFIG_ASSERT_LEVEL=2
-CONFIG_NUM_COOP_PRIORITIES=2
-CONFIG_NUM_PREEMPT_PRIORITIES=6
+CONFIG_NUM_COOP_PRIORITIES=29
+CONFIG_NUM_PREEMPT_PRIORITIES=40