[testsuite,avr,committed]: Add target avr_tiny for respective tests.

[Georg-Johann Lay]

Added target avr_tiny filter to 2 tests that are obviously intended to 
run on AVR_TINY.

Applied as obvious.
Johann

gcc/testsuite/
        * gcc.target/avr/tiny-memx.c: Only perform if target avr_tiny.
        * gcc.target/avr/tiny-caller-save.c: Dito.

Index: gcc.target/avr/tiny-caller-save.c
===================================================================
--- gcc.target/avr/tiny-caller-save.c   (revision 243104)
+++ gcc.target/avr/tiny-caller-save.c   (revision 243105)
@@ -1,4 +1,4 @@
-/* { dg-do compile } */
+/* { dg-do compile { target avr_tiny } } */
 /* { dg-options "-mmcu=avrtiny -gdwarf -Os" } */

 /* This is a stripped down piece of libgcc2.c that triggerd an ICE for 
avr with
Index: gcc.target/avr/tiny-memx.c
===================================================================
--- gcc.target/avr/tiny-memx.c  (revision 243104)
+++ gcc.target/avr/tiny-memx.c  (revision 243105)
@@ -1,4 +1,4 @@
-/* { dg-do compile } */
+/* { dg-do compile { target avr_tiny } } */
 /* { dg-options "-mmcu=avrtiny" } */

 const __memx char ascmonth[] = "Jan"; /* { dg-error "not supported" } */