arm64: dts: rockchip: Fix IR on Beelink A1

Apparently I wasn't paying enough attention... And nor is the lazy
test of `cat /dev/lirc0` sufficiently blunder-proof. Oh well, with
the correct polarity, let's also hook up a keymap now that one for
the standard Beelink remote has handily appeared.

Fixes: 79702ded ("arm64: dts: rockchip: Add Beelink A1")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/44269c08e2a5d75b03ded87d2eb11621762d8249.1577636223.git.robin.murphy@arm.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3328-a1.dts

@@ -49,7 +49,8 @@ vcc_sys: vcc-sys {
 
 	ir-receiver {
 		compatible = "gpio-ir-receiver";
-		gpios = <&gpio2 RK_PA2 GPIO_ACTIVE_HIGH>;
+		gpios = <&gpio2 RK_PA2 GPIO_ACTIVE_LOW>;
+		linux,rc-map-name = "rc-beelink-gs1";
 	};
 };