move kexec-tools from all-base-packages to $ARCH-base-packages

As kexec-tools is not supported on arm64 arch yet,
so move it to arch-specific package file to fix build issue.

builds/any/rootfs/jessie/common/all-base-packages.yml

@@ -40,7 +40,6 @@
 - pciutils
 - usbutils
 - mtd-utils
-- kexec-tools
 - i2c-tools
 - module-init-tools
 - isc-dhcp-client

builds/any/rootfs/jessie/common/amd64-base-packages.yml

@@ -8,6 +8,7 @@
 - smartmontools
 - grub2
 - onl-upgrade
+- kexec-tools
 
 
 

builds/any/rootfs/jessie/common/armel-base-packages.yml

@@ -1 +1,2 @@
 - u-boot-tools
+- kexec-tools

builds/any/rootfs/jessie/common/powerpc-base-packages.yml

@@ -4,6 +4,7 @@
 #
 ############################################################
 - u-boot-tools
+- kexec-tools