cpu: at91: add compatible for ARM9260EJ-S

The crystal, CPU and master clock were not displayed correctly on SAM9X60
after adding CCF clock support. Add compatible for ARM926EJ-S to fix
this.

Reported-by: Eugen Hristev <eugen.hristev@microchip.com>
Fixes: a64862284f65 ("clk: at91: sam9x60: add support compatible with CCF")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
diff --git a/drivers/cpu/at91_cpu.c b/drivers/cpu/at91_cpu.c
index 9ef1b31..34a3f61 100644
--- a/drivers/cpu/at91_cpu.c
+++ b/drivers/cpu/at91_cpu.c
@@ -70,6 +70,7 @@
 
 static const struct udevice_id at91_cpu_ids[] = {
 	{ .compatible = "arm,cortex-a7" },
+	{ .compatible = "arm,arm926ej-s" },
 	{ /* Sentinel. */ }
 };