kernel: bump kernel 4.14 to version 4.14.63

kernel: bump kernel 4.14 to version 4.14.63

The following patches were integrated upstream:
 * target/linux/ipq40xx/patches-4.14/050-0006-mtd-nand-qcom-Add-a-NULL-check-for-devm_kasprintf.patch
 * target/linux/mediatek/patches-4.14/0177-phy-phy-mtk-tphy-use-auto-instead-of-force-to-bypass.patch

This fixes tries to work around the following security problems:
 * CVE-2018-3620 L1 Terminal Fault OS, SMM related aspects
 * CVE-2018-3646 L1 Terminal Fault Virtualization related aspects

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>