[S390] Define GENERIC_LOCKBREAK.

Fix compile error:

CC arch/s390/kernel/asm-offsets.s
In file included from
arch/s390/kernel/asm-offsets.c:7:
include/linux/sched.h: In function 'spin_needbreak':
include/linux/sched.h:1931: error: implicit declaration of function '__raw_spin_is_contended'
make[2]: *** [arch/s390/kernel/asm-offsets.s] Error 1

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

+5
+5
arch/s390/Kconfig
··· 47 47 config NO_DMA 48 48 def_bool y 49 49 50 + config GENERIC_LOCKBREAK 51 + bool 52 + default y 53 + depends on SMP && PREEMPT 54 + 50 55 mainmenu "Linux Kernel Configuration" 51 56 52 57 config S390