Update USES_LASSEN_MODEM soong config settings for aosp projects.

Add the flag "use_lassen_modem" for bp to do the same checking like
"USES_LASSEN_MODEM" in mk.

Bug: 330654744
Test: 1. lunch aosp_cheetah-trunk_staging-userdebug
      2. m RilConfigService
Change-Id: Icb99b639837237b2afeea858de14669d583bf385
1 file changed