arch/arm/mvp/mvpkm/Kbuild: -O3

Signed-off-by: Hieu Phan <aznrice2k4@gmail.com>
z-open-com-perf_defconfig: enable CC_OPTIMIZE_FOR_PERF

Signed-off-by: Hieu Phan <aznrice2k4@gmail.com>
security/keys/encrypted-keys/encrypted.c: fix warning: 'master_keylen' may be used uninitialized in this function [-Wmaybe-uninitialized]

Signed-off-by: Hieu Phan <aznrice2k4@gmail.com>
security/keys/encrypted-keys/encrypted.c: fix warning: 'master_key' may be used uninitialized in this function [-Wmaybe-uninitialized]

Signed-off-by: Hieu Phan <aznrice2k4@gmail.com>