Use the first character of platform_version
Use the first character of platform_version

Increase the robustness of the Android platform version detection by
only using the first character of the version string.

CC: Anders Pedersen <359ba72fcbbc188e3bd9b6555c6c8dfb64c5c769@arm.com>
CC: Sidath Senanayake <3432a15da06290e9be64e28a2e774cf6def57702@google.com>
Change-Id: I5ecf922bc0b191db002c5937ab0173c456c5787c
Signed-off-by: Chris Diamand <1f58517798882095082bdee11eba81705511491e@arm.com>

ARM-software/bob-build,ARM-software/bob-build,ARM-software/bob-build,ARM-software/bob-build,ARM-software/bob-build