--compress-debug-sections option doesn't work for GCC >= 7

Wa,-compress-debug-sections was enabled in 4f0694e3af45e535bea8b28c6d4fec31ec81f73e/r59505 to reduce build folder size.
The official documentation even says that it's for ELF binaries only, but it definitely works for us with RosBE 2.1 see (https://sourceware.org/binutils/docs/as/Overview.html#index-_002d_002dcompress_002ddebug_002dsections_003d-option)

I tested this on binutils 2.32/GCC 8.3 and binutils 2.34/GCC 8.4
For the 2.32, it throws messages like this:

ld: *binary* bad reloc address 0x475 in section `.zdebug_info'

And for 2.34, it says this:

ld: final link failed: bad value