drivers/input/tablet/gtco.c: Fix uninitialized vaiables

drivers/input/tablet/gtco.c: In function 'parse_hid_report_descriptor':
drivers/input/tablet/gtco.c:381:19: warning: 'oldval[1]' may be used
uninitialized in this function [-Wmaybe-uninitialized]

Change-Id: If1a2ba6dc367b66ef7da2bfcddb69afe9ddc0218
defconfig: per http://source.android.com/devices/tech/kernel.html

Ignored # CONFIG_INET_LRO is not set as it was set by Motorola
Ignored CONFIG_ANDROID_INTF_ALARM_DEV=y due to compile errors
and it's not set on mako as well.
Change-Id: I70d677f24b70cd41c604809a636abf5c9bb0ffe0