acrn does not handle per_cpu_data[(pcpu_id)].scheduler perfectly during initialization

[476997779]

Describe the bug
acrn does not handle per_cpu_data[(pcpu_id)].scheduler perfectly during initialization

When the number of PCPUs set by BIOS is less than vm_config->cpu_affinity, acrn will give a page fault error when initializing sos，
The reason for the error is that per_cpu_data[(num)].scheduler is not set in init_sched ( vm_config->cpu_affinity > num > bios set cpu num )

When init_thread_data is executed, scheduler->init_data is a null pointer, if (scheduler->init_data != NULL) a page fault will occur

Platform
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Scenario
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To Reproduce
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Expected behavior
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Additional context
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• native Linux boot kernel message log
• ACRN serial port log (when issues happens)
• Service VM kernel message when issue happens
• acrn-dm log: all files in /var/log/acrn-tm
• console log when running script to launch guest VM