powerpc/Kconfig: Make TM select VSX and VMX

There are no processors in existence that have TM but no VMX or VSX.  So let's
makes CONFIG_PPC_TRANSACTIONAL_MEM select both CONFIG_VSX and CONFIG_ALTIVEC.
This makes the code a lot simpler by removing the need for a bunch of #ifdefs.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>

arch/powerpc/Kconfig

@@ -338,6 +338,8 @@ config PPC_TRANSACTIONAL_MEM
        bool "Transactional Memory support for POWERPC"
        depends on PPC_BOOK3S_64
        depends on SMP
+       select ALTIVEC
+       select VSX
        default n
        ---help---
          Support user-mode Transactional Memory on POWERPC.