feat: Use explicit linker script for 1MB flash B/W radios (#4244) #8206

Job	Run time
Run tests (x9dp2019)	3m 18s
Run tests (tx16s)	8m 32s
Run tests (nv14)	7m 23s
Run tests (el18)	8m 10s
Run tests (t12)	4m 11s
Run tests (t16)	8m 25s
Run tests (t18)	8m 31s
Run tests (t8)	3m 56s
Run tests (tlite)	3m 34s
Run tests (t20)	3m 36s
Run tests (tx12)	3m 32s
Run tests (x10)	9m 3s
Run tests (x12s)	7m 8s
Run tests (x7)	3m 35s
Run tests (x9d)	4m 29s
Run tests (x9dp)	4m 24s
Run tests (x9e)	4m 18s
Run tests (x9lite)	4m 12s
Run tests (x9lites)	3m 13s
Run tests (xlite)	4m 11s
Run tests (xlites)	3m 18s
Run builds (nv14;el18)	8m 45s
Run builds (t12)	2m 0s
Run builds (t16)	5m 57s
Run builds (t18)	4m 11s
Run builds (t8;zorro;pocket;commando8)	6m 15s
Run builds (tlite;tpro;tprov2;lr3pro)	4m 54s
Run builds (t20)	2m 46s
Run builds (tx12;tx12mk2;boxer)	4m 54s
Run builds (tx16s)	5m 39s
Run builds (x10;x10-access)	8m 51s
Run builds (x12s)	4m 34s
Run builds (x7;x7-access)	2m 50s
Run builds (x9d;x9dp;x9dp2019)	4m 53s
Run builds (x9e;x9e-hall)	3m 25s
Run builds (x9lite;x9lites)	3m 33s
Run builds (xlite;xlites)	4m 0s
	3h 8m 26s

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