ANDROID: Fix the CONFIG_ANDROID_VENDOR_OEM_DATA=n build

Scripts like
https://github.com/bvanassche/build-scsi-drivers/blob/main/build-scsi-drivers


do not set CONFIG_ANDROID_VENDOR_OEM_DATA. Hence this patch that
unbreaks the CONFIG_ANDROID_VENDOR_OEM_DATA=n build.

Fixes: 291dfda5 ("ANDROID: init_task: Init android vendor and oem data")
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Change-Id: Ic8223e69495fce7e2d0531313856ea5ed21659b7