Blackfin arch: Enable BF54x PIN/GPIO interrupts

Signed-off-bu: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 385c262..e01bfc7 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -71,7 +71,7 @@
 
 config IRQCHIP_DEMUX_GPIO
 	bool
-	depends on (BF53x || BF561)
+	depends on (BF53x || BF561 || BF54x)
 	default y
 
 source "init/Kconfig"