[Crash-utility] Fix irq_stack_size on ARM64

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When using the crash tool to parse the ARM64 dump file with KASAN enabled, I found that using the bt -a command will cause this tool to crash, the following is the backtrace infomation.

(gdb) bt  
#0  0x00005635ac2b166b in arm64_unwind_frame (frame=0x7ffdaf35cb70, bt=0x7ffdaf35d430) 
    at arm64.c:2821 
#1  arm64_back_trace_cmd (bt=0x7ffdaf35d430) at arm64.c:3306 
#2  0x00005635ac27b108 in back_trace (bt=bt@entry=0x7ffdaf35d430) at kernel.c:3239 
#3  0x00005635ac2880ae in cmd_bt () at kernel.c:2863 
#4  0x00005635ac1f16dc in exec_command () at main.c:893 
#5  0x00005635ac1f192a in main_loop () at main.c:840 
#6  0x00005635ac50df81 in captured_main (data=<optimized out>) at main.c:1284 
#7  gdb_main (args=<optimized out>) at main.c:1313 
#8  0x00005635ac50e000 in gdb_main_entry (argc=<optimized out>, argv=<optimized out>) 
    at main.c:1338 
#9  0x00005635ac1ea2a5 in main (argc=5, argv=0x7ffdaf35dde8) at main.c:721 
Eventually, I found that it was may caused by not setting irq_stack_size properly, and provide this patch to solve it.



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