bpf: remove trailing whitespaces from source files

bpf: remove trailing whitespaces from source files

This patch is a little cleanup that removes trailing whitespaces from
the bpf backend source files.

2020-08-07  Jose E. Marchesi  <jose.marchesi@oracle.com>

gcc/
	* config/bpf/bpf.md: Remove trailing whitespaces.
	* config/bpf/constraints.md: Likewise.
	* config/bpf/predicates.md: Likewise.

gcc/testsuite/
	* gcc.target/bpf/diag-funargs-2.c: Remove trailing whitespaces.
	* gcc.target/bpf/skb-ancestor-cgroup-id.c: Likewise.
	* gcc.target/bpf/helper-xdp-adjust-meta.c: Likewise.
	* gcc.target/bpf/helper-xdp-adjust-head.c: Likewise.
	* gcc.target/bpf/helper-tcp-check-syncookie.c: Likewise.
	* gcc.target/bpf/helper-sock-ops-cb-flags-set.c
	* gcc.target/bpf/helper-sysctl-set-new-value.c: Likewise.
	* gcc.target/bpf/helper-sysctl-get-new-value.c: Likewise.
	* gcc.target/bpf/helper-sysctl-get-name.c: Likewise.
	* gcc.target/bpf/helper-sysctl-get-current-value.c: Likewise.
	* gcc.target/bpf/helper-strtoul.c: Likewise.
	* gcc.target/bpf/helper-strtol.c: Likewise.
	* gcc.target/bpf/helper-sock-map-update.c: Likewise.
	* gcc.target/bpf/helper-sk-storage-get.c: Likewise.
	* gcc.target/bpf/helper-sk-storage-delete.c: Likewise.
	* gcc.target/bpf/helper-sk-select-reuseport.c: Likewise.
	* gcc.target/bpf/helper-sk-release.c: Likewise.
	* gcc.target/bpf/helper-sk-redirect-map.c: Likewise.
	* gcc.target/bpf/helper-sk-lookup-upd.c: Likewise.
	* gcc.target/bpf/helper-sk-lookup-tcp.c: Likewise.
	* gcc.target/bpf/helper-skb-change-head.c: Likewise.
	* gcc.target/bpf/helper-skb-cgroup-id.c: Likewise.
	* gcc.target/bpf/helper-skb-adjust-room.c: Likewise.
	* gcc.target/bpf/helper-set-hash.c: Likewise.
	* gcc.target/bpf/helper-setsockopt.c: Likewise.
	* gcc.target/bpf/helper-redirect-map.c: Likewise.
	* gcc.target/bpf/helper-rc-repeat.c: Likewise.
	* gcc.target/bpf/helper-rc-keydown.c: Likewise.
	* gcc.target/bpf/helper-probe-read-str.c: Likewise.
	* gcc.target/bpf/helper-perf-prog-read-value.c: Likewise.
	* gcc.target/bpf/helper-perf-event-read-value.c: Likewise.
	* gcc.target/bpf/helper-override-return.c: Likewise.
	* gcc.target/bpf/helper-msg-redirect-map.c: Likewise.
	* gcc.target/bpf/helper-msg-pull-data.c: Likewise.
	* gcc.target/bpf/helper-msg-cork-bytes.c: Likewise.
	* gcc.target/bpf/helper-msg-apply-bytes.c: Likewise.
	* gcc.target/bpf/helper-lwt-seg6-store-bytes.c: Likewise.
	* gcc.target/bpf/helper-lwt-seg6-adjust-srh.c: Likewise.
	* gcc.target/bpf/helper-lwt-seg6-action.c: Likewise.
	* gcc.target/bpf/helper-lwt-push-encap.c: Likewise.
	* gcc.target/bpf/helper-get-socket-uid.c: Likewise.
	* gcc.target/bpf/helper-get-socket-cookie.c: Likewise.
	* gcc.target/bpf/helper-get-local-storage.c: Likewise.
	* gcc.target/bpf/helper-get-current-cgroup-id.c: Likewise.
	* gcc.target/bpf/helper-getsockopt.c: Likewise.
	* gcc.target/bpf/diag-funargs-3.c: Likewise.