ARM: AT91: pm: Factorize standby function

Detect presence of second bank. So we do not need to have on function per SoC

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

diff --cc arch/arm/mach-at91/at91sam9260.c
Simple merge

diff --cc arch/arm/mach-at91/at91sam9261.c
Simple merge

diff --cc arch/arm/mach-at91/at91sam9263.c
Simple merge

diff --cc arch/arm/mach-at91/at91sam9g45.c
Simple merge

diff --cc arch/arm/mach-at91/at91sam9rl.c
Simple merge

diff --cc arch/arm/mach-at91/pm.h
Simple merge