linux-user/loongarch64: 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/loongarch64/Makefile.vdso

@@ -8,4 +8,5 @@ all: $(SUBDIR)/vdso.so
 $(SUBDIR)/vdso.so: vdso.S vdso.ld vdso-asmoffset.h
 	$(CC) -o $@ -nostdlib -shared -fpic -Wl,-h,linux-vdso.so.1 \
 	  -Wl,--build-id=sha1 -Wl,--hash-style=both \
-	  -Wl,--no-warn-rwx-segments -Wl,-T,$(SUBDIR)/vdso.ld $<
+	  -Wl,--no-warn-rwx-segments -Wl,-z,max-page-size=4096 \
+	  -Wl,-T,$(SUBDIR)/vdso.ld $<