fixed cpu info incorrect and remove 2M hugepages

with original script, user can not get 3 CPU cores info with cat/proc/cpuinfo in UOS.
it just show 1 only.  with this patch,  default,  user can see 1 cpu info in SOS and 3 cores info in UOS.
and remove 2M hugepages settings because it is not using any more.
# make sure there is enough 2M hugepages in the pool
echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
also, this patch is setting default UOS memory to 2G

devicemodel/samples/nuc/launch_uos.sh

@@ -14,10 +14,7 @@ if [[ "$result" != "" ]]; then
 fi
 
 #for memsize setting
-mem_size=1000M
-
-# make sure there is enough 2M hugepages in the pool
-echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
+mem_size=2048M
 
 acrn-dm -A -m $mem_size -c $2 -s 0:0,hostbridge -s 1:0,lpc -l com1,stdio \
   -s 2,pci-gvt -G "$3" \
@@ -44,4 +41,4 @@ for i in `ls -d /sys/devices/system/cpu/cpu[1-99]`; do
         fi
 done
 
-launch_clear 2 1 "64 448 8" 0x070F00 clear
+launch_clear 1 3 "64 448 8" 0x070F00 clear