ANDROID: Drop abi_gki_aarch64_workarounds

ehci_handshake was added to the symbol list as a temporary workaround
for CRC-related issues in the ehci code. But since this has now been
fixed, let's drop the unnecessary symbol list altogether.

Bug: 167230325
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I8f56b01ff9bed8e0d417f8c90adb7c32480d55cf