avr32: set CONFIG_CC_OPTIMIZE_FOR_SIZE=y for all defconfigs

This patch makes sure the kconfig option CC_OPTIMIZE_FOR_SIZE is set to yes for
all default configuration files. This ensures the kernel is optimized for size,
and avoids potential relocation truncated to fit problems.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>

diff --cc arch/avr32/configs/atngw100_defconfig
Simple merge

diff --cc arch/avr32/configs/atngw100_evklcd100_defconfig
Simple merge

diff --cc arch/avr32/configs/atngw100_evklcd101_defconfig
Simple merge

diff --cc arch/avr32/configs/atngw100_mrmt_defconfig
Simple merge

diff --cc arch/avr32/configs/atngw100mkii_defconfig
Simple merge

diff --cc arch/avr32/configs/atngw100mkii_evklcd100_defconfig
Simple merge

diff --cc arch/avr32/configs/atngw100mkii_evklcd101_defconfig
Simple merge

diff --cc arch/avr32/configs/atstk1002_defconfig
Simple merge

diff --cc arch/avr32/configs/atstk1003_defconfig
Simple merge

diff --cc arch/avr32/configs/atstk1004_defconfig
Simple merge

diff --cc arch/avr32/configs/atstk1006_defconfig
Simple merge

diff --cc arch/avr32/configs/favr-32_defconfig
Simple merge

diff --cc arch/avr32/configs/hammerhead_defconfig
Simple merge

diff --cc arch/avr32/configs/merisc_defconfig
Simple merge

diff --cc arch/avr32/configs/mimc200_defconfig
Simple merge