sh: vsyscall: Remove unnecessary $(foreach ...)

There is no need to use $(foreach ...) for iterating over just one parameter.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20231120235423.4103310-1-masahiroy@kernel.orgSigned-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>

arch/sh/kernel/vsyscall/Makefile

 # SPDX-License-Identifier: GPL-2.0
 obj-y += vsyscall.o vsyscall-syscall.o vsyscall-syms.o
 
-$(obj)/vsyscall-syscall.o: \
-	$(foreach F,trapa,$(obj)/vsyscall-$F.so)
+$(obj)/vsyscall-syscall.o: $(obj)/vsyscall-trapa.so
 
 # Teach kbuild about targets
-targets += $(foreach F,trapa,vsyscall-$F.o vsyscall-$F.so)
+targets += vsyscall-trapa.o vsyscall-traps.so
 targets += vsyscall-note.o vsyscall.lds vsyscall-dummy.o
 
 # The DSO images are built using a special linker script