ARM: at91: rename defconfig files appropriately

rename all Atmel reference board as soc defconfig

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Arnd Bergmann <arnd@arndb.de>

diff --git a/arch/arm/configs/at91cap9adk_defconfig b/arch/arm/configs/at91cap9_defconfig
similarity index 100%
rename from arch/arm/configs/at91cap9adk_defconfig
rename to arch/arm/configs/at91cap9_defconfig

diff --git a/arch/arm/configs/at91sam9260ek_defconfig b/arch/arm/configs/at91sam9260_defconfig
similarity index 100%
rename from arch/arm/configs/at91sam9260ek_defconfig
rename to arch/arm/configs/at91sam9260_defconfig

diff --git a/arch/arm/configs/at91sam9g20ek_defconfig b/arch/arm/configs/at91sam9g20_defconfig
similarity index 100%
rename from arch/arm/configs/at91sam9g20ek_defconfig
rename to arch/arm/configs/at91sam9g20_defconfig

diff --git a/arch/arm/configs/at91sam9rlek_defconfig b/arch/arm/configs/at91sam9rl_defconfig
similarity index 100%
rename from arch/arm/configs/at91sam9rlek_defconfig
rename to arch/arm/configs/at91sam9rl_defconfig