kernel: deactivate the vdso gettimeofday function.

The vdso version of this function has some problems with the cache.
Very often it works on dated data which causes problem. We are
currently working on fixing this in upstream Linux kernel.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 48787

target/linux/generic/patches-4.4/340-MIPS-deactivate-gettimeofday-vdso.patch

+--- a/arch/mips/vdso/Makefile
++++ b/arch/mips/vdso/Makefile
+@@ -1,5 +1,5 @@
+ # Objects to go into the VDSO.
+-obj-vdso-y := elf.o gettimeofday.o sigreturn.o
++obj-vdso-y := elf.o sigreturn.o
+ 
+ # Common compiler flags between ABIs.
+ ccflags-vdso := \