add r8169 read mac form eeprom

hc

2024-02-19 1c055e55a242a33e574e48be530e06770a210dcd

 kernel/arch/x86/include/asm/barrier.h
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@@ -49,8 +49,7 @@
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 #define array_index_mask_nospec array_index_mask_nospec
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 /* Prevent speculative execution past this barrier. */
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-#define barrier_nospec() alternative_2("", "mfence", X86_FEATURE_MFENCE_RDTSC, \
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-					   "lfence", X86_FEATURE_LFENCE_RDTSC)
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+#define barrier_nospec() alternative("", "lfence", X86_FEATURE_LFENCE_RDTSC)
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 #define dma_rmb()	barrier()
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 #define dma_wmb()	barrier()