tests/kernel/benchmarks: Disable TICKLESS_KERNEL for "no tick" tests

These tests was written to try to eliminate timer interrupts, but the
mechanism chosen (setting TICKS_PER_SECOND to 1) is dangerously
susceptible to overflow conditions on systems with fast cycle counters
and high timeout durations.

Actually the tests pass just fine if you use a conventional tick rate
and use a tickless-capable driver (which eliminates interrupts too,
which is the whole point), but there's no easy way in kconfig to do an
"if" to select that condition for capable systems only.  Just disable
tickless to keep the same behavior.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>

tests/benchmarks/app_kernel/prj.conf

@@ -4,6 +4,8 @@ CONFIG_STDOUT_CONSOLE=y
 
 # eliminate timer interrupts during the benchmark
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=1
+CONFIG_TICKLESS_KERNEL=n
+
 CONFIG_MAIN_THREAD_PRIORITY=6
 CONFIG_FORCE_NO_ASSERT=y
 

tests/benchmarks/app_kernel/prj_fp.conf

@@ -10,6 +10,8 @@ CONFIG_SSE_FP_MATH=y
 
 # eliminate timer interrupts during the benchmark
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=1
+CONFIG_TICKLESS_KERNEL=n
+
 CONFIG_FORCE_NO_ASSERT=y
 
 #Disable Userspace

tests/benchmarks/latency_measure/prj.conf

@@ -4,6 +4,7 @@ CONFIG_STDOUT_CONSOLE=y
 
 # eliminate timer interrupts during the benchmark
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=1
+CONFIG_TICKLESS_KERNEL=n
 
 # We use irq_offload(), enable it
 CONFIG_IRQ_OFFLOAD=y

tests/benchmarks/sys_kernel/prj.conf

@@ -4,6 +4,7 @@ CONFIG_STDOUT_CONSOLE=y
 
 # eliminate timer interrupts during the benchmark
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=1
+CONFIG_TICKLESS_KERNEL=n
 
 CONFIG_MAIN_STACK_SIZE=16384
 CONFIG_FORCE_NO_ASSERT=y