s390/pai: Rename perf_pai_crypto.c to perf_pai.c

Rename perf_pai_crypto.c to perf_pai.c. The new perf_pai.c
contains both PAI device drivers:
 - pai_crypto for PAI crypto counter set
 - pai_ext for PAI NNPA counter set
The rename reflects this common driver supporting both PMUs.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Jan Polensky <japo@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

Author: Thomas Richter

arch/s390/kernel/Makefile

@@ -79,7 +79,7 @@ obj-$(CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT)	+= ima_arch.o
 obj-$(CONFIG_PERF_EVENTS)	+= perf_event.o
 obj-$(CONFIG_PERF_EVENTS)	+= perf_cpum_cf.o perf_cpum_sf.o
 obj-$(CONFIG_PERF_EVENTS)	+= perf_cpum_cf_events.o perf_regs.o
-obj-$(CONFIG_PERF_EVENTS)	+= perf_pai_crypto.o
+obj-$(CONFIG_PERF_EVENTS)	+= perf_pai.o
 
 obj-$(CONFIG_TRACEPOINTS)	+= trace.o