extract: Fix and simplify DSP file naming

src/build/soong.ts

@@ -70,6 +70,7 @@ export interface EtcXmlModule {
 
 export interface DspModule {
   src: string
+  filename_from_src: boolean
   sub_dir?: string
 }
 
@@ -145,6 +146,7 @@ export function blobToSoongModule(
     moduleSpecific = {
       _type: 'prebuilt_dsp',
       src: entry.srcPath,
+      filename_from_src: true,
       ...(relPath && { sub_dir: relPath }),
     }
   // Then other extension-based types

src/commands/extract.ts

@@ -39,7 +39,7 @@ async function generateBuild(
       // Named dependencies -> Soong blueprint
 
       // Module name = file name, excluding extension if it was used
-      let baseExt = (SPECIAL_FILE_EXTENSIONS.has(ext) && pathParts[0] != 'dsp') ? ext : undefined
+      let baseExt = SPECIAL_FILE_EXTENSIONS.has(ext) ? ext : undefined
       let name = path.basename(entry.path, baseExt)
 
       // If already exists: skip if it's the other arch variant of a library in