staging: android: ion: Update wording in drivers/staging/android/ion/Kconfig

Changes the usage of the word 'Chose' to 'Choose' in the ION
Memory Manager Kconfig.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>