Strip out feature version from strings in BL Preparer

The existing logic does not handle feature strings with version
number in the end, e.g. "com.feature=5". Adding this code
resolves issues where features with version on device fails to map
the devices into their correct form factor on BL.

Test: Local GXRTS testing
Bug: 357737739
Flag: EXEMPT test prep logic change only
Change-Id: Ibbccad16dfe2ddd14b8c50e1039a1bba67705f19
1 file changed
tree: 804d72d15ffc8db80d48ee1bcb3e472598e2839d
  1. common/
  2. OWNERS
  3. PREUPLOAD.cfg