linux-user/aarch64: Reduce vdso alignment to 4k

Reduce vdso alignment to minimum page size.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

linux-user/aarch64/Makefile.vdso

@@ -5,8 +5,9 @@ VPATH += $(SUBDIR)
 
 all: $(SUBDIR)/vdso-be.so $(SUBDIR)/vdso-le.so
 
-LDFLAGS = -nostdlib -shared -Wl,-h,linux-vdso.so.1 -Wl,--build-id=sha1 \
-	  -Wl,--hash-style=both -Wl,-T,$(SUBDIR)/vdso.ld
+LDFLAGS = -nostdlib -shared -Wl,-h,linux-vdso.so.1 \
+	  -Wl,--build-id=sha1 -Wl,--hash-style=both \
+	  -Wl,-z,max-page-size=4096 -Wl,-T,$(SUBDIR)/vdso.ld
 
 $(SUBDIR)/vdso-be.so: vdso.S vdso.ld
 	$(CC) -o $@ $(LDFLAGS) -mbig-endian $<