DM/samples: remove clocksource assignment

HPET reading is much slower than TSC. Using it will hurt SOS performance
a lot, and then the whole system performance.

Remove the strict assignment from cmdline. Then SOS kernel will pickup
TSC as default clocksource.

Signed-off-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>

Author: Shuo Liu

devicemodel/samples/apl-mrb/sos_bootargs_debug.txt

@@ -1 +1 @@
-pci_devices_ignore=(0:18:2) maxcpus=1 console=tty0 console=ttyS0 i915.nuclear_pageflip=1 root=/dev/mmcblk1p1 rw rootwait clocksource=hpet quiet loglevel=3 no_timer_check consoleblank=0 i915.enable_initial_modeset=1 i915.tsd_init=7 i915.tsd_delay=2000 video=DP-1:d video=DP-2:d video=HDMI-A-1:e video=HDMI-A-2:e i915.avail_planes_per_pipe=0x01010F i915.domain_plane_owners=0x011111110000 i915.enable_guc_loading=0 i915.enable_guc_submission=0 i915.enable_preemption=1 i915.context_priority_mode=2 i915.enable_gvt=1 hvlog=2M@0x6de00000 reboot_panic=p,w
+pci_devices_ignore=(0:18:2) maxcpus=1 console=tty0 console=ttyS0 i915.nuclear_pageflip=1 root=/dev/mmcblk1p1 rw rootwait quiet loglevel=3 no_timer_check consoleblank=0 i915.enable_initial_modeset=1 i915.tsd_init=7 i915.tsd_delay=2000 video=DP-1:d video=DP-2:d video=HDMI-A-1:e video=HDMI-A-2:e i915.avail_planes_per_pipe=0x01010F i915.domain_plane_owners=0x011111110000 i915.enable_guc_loading=0 i915.enable_guc_submission=0 i915.enable_preemption=1 i915.context_priority_mode=2 i915.enable_gvt=1 hvlog=2M@0x6de00000 reboot_panic=p,w

devicemodel/samples/apl-mrb/sos_bootargs_release.txt

@@ -1 +1 @@
-maxcpus=1 console=tty0 i915.nuclear_pageflip=1 root=/dev/mmcblk1p1 rw rootwait clocksource=hpet quiet loglevel=3 no_timer_check consoleblank=0 i915.enable_initial_modeset=1 i915.tsd_init=7 i915.tsd_delay=2000 video=DP-1:d video=DP-2:d video=HDMI-A-1:e video=HDMI-A-2:e i915.avail_planes_per_pipe=0x01010F i915.domain_plane_owners=0x011111110000 i915.enable_guc_loading=0 i915.enable_guc_submission=0 i915.enable_preemption=1 i915.context_priority_mode=2 i915.enable_gvt=1
+maxcpus=1 console=tty0 i915.nuclear_pageflip=1 root=/dev/mmcblk1p1 rw rootwait quiet loglevel=3 no_timer_check consoleblank=0 i915.enable_initial_modeset=1 i915.tsd_init=7 i915.tsd_delay=2000 video=DP-1:d video=DP-2:d video=HDMI-A-1:e video=HDMI-A-2:e i915.avail_planes_per_pipe=0x01010F i915.domain_plane_owners=0x011111110000 i915.enable_guc_loading=0 i915.enable_guc_submission=0 i915.enable_preemption=1 i915.context_priority_mode=2 i915.enable_gvt=1