kernel.bbclass: include PE in KERNEL_IMAGE_BASE_NAME
* without this you it's harder to see which kernel is newer version
e.g. after branch change LOCALCOUNT in SRCPV is reset to 0, so it needs PE bump for upgrade path
but then it's clear why gitr1+HASH has newer DATETIME then gitrN+HASH, so include PE in name
* it will sort alphabetically wrong in deploy dir for a while until old images are removed
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com> Signed-off-by: Saul Wold <sgw@linux.intel.com>
