unix: add perf event ioctl constants on Linux

Add the PERF_EVENT_IOC_* constants on Linux which are used to
enable/disable/configure perf events. Also add the PERF_IOC_FLAG_GROUP
constant which might be using as part of the ioct argument. See section
"perf_event ioctl calls" in
http://man7.org/linux/man-pages/man2/perf_event_open.2.html

Change-Id: I92fb8f6ef5cc53711f00db566d8e277cdf1cd607
Reviewed-on: https://go-review.googlesource.com/47770
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/unix/zerrors_linux_mipsle.go b/unix/zerrors_linux_mipsle.go
index c48ec18..aa69fe6 100644
--- a/unix/zerrors_linux_mipsle.go
+++ b/unix/zerrors_linux_mipsle.go
@@ -1056,6 +1056,16 @@
 	PARMRK                               = 0x8
 	PARODD                               = 0x200
 	PENDIN                               = 0x4000
+	PERF_EVENT_IOC_DISABLE               = 0x20002401
+	PERF_EVENT_IOC_ENABLE                = 0x20002400
+	PERF_EVENT_IOC_ID                    = 0x40042407
+	PERF_EVENT_IOC_PAUSE_OUTPUT          = 0x80042409
+	PERF_EVENT_IOC_PERIOD                = 0x80082404
+	PERF_EVENT_IOC_REFRESH               = 0x20002402
+	PERF_EVENT_IOC_RESET                 = 0x20002403
+	PERF_EVENT_IOC_SET_BPF               = 0x80042408
+	PERF_EVENT_IOC_SET_FILTER            = 0x80042406
+	PERF_EVENT_IOC_SET_OUTPUT            = 0x20002405
 	PRIO_PGRP                            = 0x1
 	PRIO_PROCESS                         = 0x0
 	PRIO_USER                            = 0x2