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问题描述及复现步骤:
在修改内核配置后，编译报错，发现是kernel/drivers/spi/spi-wk2xxx这个文件不是源码引起的，请修复一下。

MODPOST vmlinux.o
drivers/spi/spi-wk2xxx: In function wk2xxx_set_mctrl':<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:828: undefined reference to _mcount'
/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:828:(.text+0xc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'<br/>drivers/spi/spi-wk2xxx: In function wk2xxx_get_mctrl':
/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:835: undefined reference to _mcount'<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:835:(.text+0x24): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'
drivers/spi/spi-wk2xxx: In function wk2xxx_enable_ms':<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:958: undefined reference to _mcount'
/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:958:(.text+0x40): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'<br/>drivers/spi/spi-wk2xxx: In function wk2xxx_break_ctl':
/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:968: undefined reference to _mcount'<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:968:(.text+0x58): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'
drivers/spi/spi-wk2xxx: In function wk2xxx_type':<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:1460: undefined reference to _mcount'
/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:1460:(.text+0x78): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'<br/>drivers/spi/spi-wk2xxx:/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:1505: more undefined references to _mcount' follow
drivers/spi/spi-wk2xxx: In function wk2xxx_verify_port':<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:1505:(.text+0xbc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'
drivers/spi/spi-wk2xxx: In function wk2xxx_request_port':<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:1479:(.text+0x120): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'
drivers/spi/spi-wk2xxx: In function wk2xxx_config_port':<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:1488:(.text+0x154): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'
drivers/spi/spi-wk2xxx: In function wk2xxx_release_port':<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:1471:(.text+0x188): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'
drivers/spi/spi-wk2xxx: In function wk2xxx_remove':<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:1750:(.text+0x1bc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol _mcount'
drivers/spi/spi-wk2xxx: In function wk2xxx_dowork':<br/>/home/llq/p/proj/rk3568/kernel/drivers/spi/spi-wk2xxx.c:266:(.text+0x248): additional relocation overflows omitted from the output<br/>drivers/spi/spi-wk2xxx: In function kmalloc':
/home/llq/p/proj/rk3568/kernel/./include/linux/slab.h:548: undefined reference to kmem_cache_alloc_trace'<br/>drivers/spi/spi-wk2xxx: In function wk2xxx_tx_empty':