[Ameba] Fix Trailing Null

[pankore]

Issue Being Resolved

• TC-BINFO-2.1 when reading location, it shows 3 chars. Remove trailing null after getPref_str_new

Change overview

• src/platform/Ameba/AmebaConfig.cpp

[github-actions]

PR #22836: Size comparison from edb93a0 to f7789d8

Decreases (1 build for bl702)

platform	target	config	section	edb93a0	f7789d8	change	% change
bl702	lighting-app	bl702+rpc	.debug_info	41805210	41805209	-1	-0.0
			.text	1030456	1030454	-2	-0.0

Full report (5 builds for bl702, linux, mbed)

platform	target	config	section	edb93a0	f7789d8	change	% change
bl702	lighting-app	bl702		0	0	0	0.0
			(read only)	3262	3262	0	0.0
			(read/write)	1188091	1188091	0	0.0
			.bleromro	6296	6296	0	0.0
			.bleromrw	124	124	0	0.0
			.boot2	688	688	0	0.0
			.bss	67078	67078	0	0.0
			.bss_psram	29696	29696	0	0.0
			.comment	48	48	0	0.0
			.data	4272	4272	0	0.0
			.debug_abbrev	1506921	1506921	0	0.0
			.debug_aranges	133088	133088	0	0.0
			.debug_frame	486408	486408	0	0.0
			.debug_info	37898613	37898613	0	0.0
			.debug_line	5252753	5252753	0	0.0
			.debug_loc	3364043	3364043	0	0.0
			.debug_ranges	359032	359032	0	0.0
			.debug_str	3456012	3456012	0	0.0
			.hbn	509	509	0	0.0
			.hbn_noinit	260	260	0	0.0
			.init	342	342	0	0.0
			.init_array	144	144	0	0.0
			.psram	0	0	0	0.0
			.riscv.attributes	47	47	0	0.0
			.rodata	116472	116472	0	0.0
			.rsvd	3188	3188	0	0.0
			.shstrtab	293	293	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	564828	564828	0	0.0
			.symtab	171600	171600	0	0.0
			.tcm_data	36	36	0	0.0
			.tcmcode	3262	3262	0	0.0
			.text	956754	956754	0	0.0
		bl702+rpc		0	0	0	0.0
			(read only)	3262	3262	0	0.0
			(read/write)	1284011	1284011	0	0.0
			.bleromro	6296	6296	0	0.0
			.bleromrw	124	124	0	0.0
			.boot2	688	688	0	0.0
			.bss	75126	75126	0	0.0
			.bss_psram	29936	29936	0	0.0
			.comment	48	48	0	0.0
			.data	4800	4800	0	0.0
			.debug_abbrev	1644466	1644466	0	0.0
			.debug_aranges	140592	140592	0	0.0
			.debug_frame	511784	511784	0	0.0
			.debug_info	41805210	41805209	-1	-0.0
			.debug_line	5627292	5627292	0	0.0
			.debug_loc	3556747	3556747	0	0.0
			.debug_ranges	381488	381488	0	0.0
			.debug_str	3851912	3851912	0	0.0
			.hbn	509	509	0	0.0
			.hbn_noinit	260	260	0	0.0
			.init	342	342	0	0.0
			.init_array	160	160	0	0.0
			.psram	0	0	0	0.0
			.riscv.attributes	47	47	0	0.0
			.rodata	129864	129864	0	0.0
			.rsvd	3188	3188	0	0.0
			.shstrtab	293	293	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	624001	624001	0	0.0
			.symtab	189408	189408	0	0.0
			.tcm_data	36	36	0	0.0
			.tcmcode	3262	3262	0	0.0
			.text	1030456	1030454	-2	-0.0
linux	chip-tool-ipv6only	arm64	(read only)	10381740	10381740	0	0.0
			(read/write)	706257	706257	0	0.0
			.bss	33953	33953	0	0.0
			.data	2864	2864	0	0.0
			.data.rel.ro	650560	650560	0	0.0
			.dynamic	560	560	0	0.0
			.got	13904	13904	0	0.0
			.init	24	24	0	0.0
			.init_array	208	208	0	0.0
			.rodata	508332	508332	0	0.0
			.text	8219428	8219428	0	0.0
	thermostat-no-ble	arm64	(read only)	2387508	2387508	0	0.0
			(read/write)	143649	143649	0	0.0
			.bss	55361	55361	0	0.0
			.data	1912	1912	0	0.0
			.data.rel.ro	77208	77208	0	0.0
			.dynamic	560	560	0	0.0
			.got	5184	5184	0	0.0
			.init	24	24	0	0.0
			.init_array	440	440	0	0.0
			.rodata	143676	143676	0	0.0
			.text	2001536	2001536	0	0.0
mbed	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2455680	2455680	0	0.0
			.bss	215044	215044	0	0.0
			.data	5872	5872	0	0.0
			.text	1418324	1418324	0	0.0