ldscripts: fix static thread data section name #647

Job	Run time
Build and package cores	9m 14s
Split off zephyr_contrib	7s
Split off zephyr_main	9s
Split off zephyr	9s
Split off zephyr_unoq	14s
Test zephyr_main:portentah7	2m 52s
Test zephyr_main:portentac33	2m 45s
Test zephyr_main:opta	2m 49s
Test zephyr_main:giga	2m 53s
Test zephyr_main:nano33ble	2m 49s
Test zephyr_contrib:frdm_rw612	2m 37s
Test zephyr_main:niclasense	2m 55s
Test zephyr_contrib:ek_ra8d1	2m 43s
Test zephyr:unoq	2m 40s
Test zephyr_contrib:frdm_mcxn947	2m 40s
Collect logs	10s
verify-core	2s
cleanup-artifacts	3s
Publish jsons	0s
Publish core	0s
	37m 51s

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