ASoC: Intel: maxim-common: change max98373 data to static #43

Job	Run time
GCC build arm64	17m 12s
GCC static -fanalyzer	4m 15s
GCC build arm64 allmodconfig	1m 30s
Clang build x86_64	3m 52s
GCC build i386	14m 50s
GCC build X86_64	17m 14s
GCC build X86_64 with W=1 allmodconfig	1m 41s
GCC build X86_64 with W=1	3m 8s
Sparse check	3m 1s
	1h 6m 43s

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