arm64: defconfig: Enable PCA9532 support

Enable i2c led expander PCA9532 module support populated on
phyBOARD-Pollux-i.MX8M Plus.
Signed-off-by: NTeresa Remmet <t.remmet@phytec.de>
Reviewed-by: NKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm64/configs/defconfig

@@ -836,6 +836,7 @@ CONFIG_MMC_OWL=y
 CONFIG_NEW_LEDS=y
 CONFIG_LEDS_CLASS=y
 CONFIG_LEDS_LM3692X=m
+CONFIG_LEDS_PCA9532=m
 CONFIG_LEDS_GPIO=y
 CONFIG_LEDS_PWM=y
 CONFIG_LEDS_SYSCON=y