ARM: atmel: spl: add saic to aic redirect function

Some SoC need to redirect the saic to aic to make the interrupt to
work, here add a weak function to be replaced by real function.

Signed-off-by: Bo Shen <voice.shen@atmel.com>

arch/arm/cpu/at91-common/spl_atmel.c

@@ -63,6 +63,11 @@ __weak void matrix_init(void)
 	/* This only be used for sama5d4 soc now */
 }
 
+__weak void redirect_int_from_saic_to_aic(void)
+{
+	/* This only be used for sama5d4 soc now */
+}
+
 void s_init(void)
 {
 	switch_to_main_crystal_osc();
@@ -77,6 +82,8 @@ void s_init(void)
 
 	matrix_init();
 
+	redirect_int_from_saic_to_aic();
+
 	timer_init();
 
 	board_early_init_f();

arch/arm/include/asm/arch-at91/at91_common.h

@@ -33,5 +33,6 @@ void at91_mck_init(u32 mckr);
 void at91_spl_board_init(void);
 void at91_disable_wdt(void);
 void matrix_init(void);
+void redirect_int_from_saic_to_aic(void);
 
 #endif /* AT91_COMMON_H */