arch: *: Kconfig: add "kernel/Kconfig.freezer" to "arch/*/Kconfig"

All architectures include "kernel/Kconfig.freezer" except three left, so let them include it too, or 'allmodconfig' will report error.

The related errors: (with allmodconfig for openrisc):

CC kernel/cgroup_freezer.o
kernel/cgroup_freezer.c: In function 'freezer_css_online':
kernel/cgroup_freezer.c:133:15: error: 'system_freezing_cnt' undeclared (first use in this function) kernel/cgroup_freezer.c:133:15: note: each undeclared identifier is reported only once for each function it appears in kernel/cgroup_freezer.c: In function 'freezer_css_offline':
kernel/cgroup_freezer.c:157:15: error: 'system_freezing_cnt' undeclared (first use in this function) kernel/cgroup_freezer.c: In function 'freezer_attach':
kernel/cgroup_freezer.c:200:4: error: implicit declaration of function 'freeze_task' kernel/cgroup_freezer.c: In function 'freezer_apply_state':
kernel/cgroup_freezer.c:371:16: error: 'system_freezing_cnt' undeclared (first use in this function)

---
 arch/hexagon/Kconfig  |    1 +
 arch/openrisc/Kconfig |    1 +
 arch/score/Kconfig    |    2 ++
 3 files changed, 4 insertions(+), 0 deletions(-)

index 33a9792..77d442a 100644
@@ -158,6 +158,7 @@ source "kernel/Kconfig.hz"
 endmenu
 
 source "init/Kconfig"
+source "kernel/Kconfig.freezer"
 source "drivers/Kconfig"
 source "fs/Kconfig"
 

index 99dbab1..d60bf98 100644
@@ -55,6 +55,7 @@ config GENERIC_CSUM
 
 source "init/Kconfig"
 
+source "kernel/Kconfig.freezer"
 
 menu "Processor type and features"
 

index c8def8b..5fc2375 100644
@@ -87,6 +87,8 @@ config STACKTRACE_SUPPORT
 
 source "init/Kconfig"
 
+source "kernel/Kconfig.freezer"
+
 config MMU
 	def_bool y
 

1.7.7.6