linux-*: don't use 'flavor' in kernel name (MR 2426)

device/testing/linux-asus-flo/APKBUILD

device/testing/linux-asus-z00vd/APKBUILD

device/testing/linux-fly-iq4404/APKBUILD

device/testing/linux-google-crosshatch-mainline/APKBUILD

device/testing/linux-gp-peak/APKBUILD

device/testing/linux-htc-bravo/APKBUILD

device/testing/linux-lg-dory/APKBUILD

device/testing/linux-nokia-n9/APKBUILD

device/testing/linux-nokia-sand/APKBUILD

device/testing/linux-ouya-ouya-mainline/APKBUILD

device/testing/linux-samsung-espresso3g/APKBUILD

device/testing/linux-samsung-maguro/APKBUILD

device/testing/linux-samsung-p4wifi/APKBUILD

device/testing/linux-sony-nicki-mainline/APKBUILD

device/testing/linux-teclast-x80pro/APKBUILD

device/testing/linux-wiko-lenny2/APKBUILD

device/testing/linux-zte-p731a20/APKBUILD

main/linux-postmarketos-qcom-msm8996/APKBUILD

main/linux-postmarketos-qcom-sdm660/APKBUILD

main/linux-postmarketos-rockchip/APKBUILD