[Ameba] fix compile error when shell disabled

[pankore]

• Fix compile error when CONFIG_ENABLE_CHIP_SHELL is disabled

[github-actions]

PR #25269: Size comparison from 7e728bc to 3d71473

Decreases (1 build for cc32xx)

platform	target	config	section	7e728bc	3d71473	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL	.debug_info	20249763	20249762	-1	-0.0

Full report (1 build for cc32xx)

platform	target	config	section	7e728bc	3d71473	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL		0	0	0	0.0
			(read only)	642569	642569	0	0.0
			(read/write)	203664	203664	0	0.0
			.ARM.attributes	44	44	0	0.0
			.ARM.exidx	8	8	0	0.0
			.bss	197064	197064	0	0.0
			.comment	194	194	0	0.0
			.data	1480	1480	0	0.0
			.debug_abbrev	930138	930138	0	0.0
			.debug_aranges	87272	87272	0	0.0
			.debug_frame	299764	299764	0	0.0
			.debug_info	20249763	20249762	-1	-0.0
			.debug_line	2655140	2655140	0	0.0
			.debug_loc	2795460	2795460	0	0.0
			.debug_ranges	281592	281592	0	0.0
			.debug_str	3018033	3018033	0	0.0
			.ramVecs	780	780	0	0.0
			.resetVecs	64	64	0	0.0
			.rodata	105817	105817	0	0.0
			.shstrtab	232	232	0	0.0
			.stab	204	204	0	0.0
			.stabstr	441	441	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	377761	377761	0	0.0
			.symtab	256256	256256	0	0.0
			.text	534628	534628	0	0.0