Revert "ARM: 8800/1: use choice for kernel unwinders"

This reverts commit b182bc71 which is
commit f9b58e8c7d031b0daa5c9a9ee27f5a4028ba53ac upstream.

It is not needed in Android kernels, and it breaks the arm allmodconfig
build at this point in time, due to an invalid gcc check.

Fixes: b182bc71 ("ARM: 8800/1: use choice for kernel unwinders")
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iaf71effdf977b4dd74e583ac4a4b49af4ac4b59e