Update the properties for the lm3532 device node for droid4.
With this change the backlight LED string and the keypad
LED strings will be controlled separately.

Signed-off-by: Dan Murphy <dmur...@ti.com>
---

v3 - updated keypad label on v1 comment - 
https://lore.kernel.org/patchwork/patch/1049023/

v2 - Fixed ramp-up and ramp-down properties, removed hard coded property values,
I did not change the label as it is undecided what it could be - 
https://lore.kernel.org/patchwork/patch/1048806/

 arch/arm/boot/dts/omap4-droid4-xt894.dts | 26 ++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/arch/arm/boot/dts/omap4-droid4-xt894.dts 
b/arch/arm/boot/dts/omap4-droid4-xt894.dts
index e21ec929f096..aea206f04f76 100644
--- a/arch/arm/boot/dts/omap4-droid4-xt894.dts
+++ b/arch/arm/boot/dts/omap4-droid4-xt894.dts
@@ -383,20 +383,30 @@
 };
 
 &i2c1 {
-       lm3532@38 {
+       led-controller@38 {
                compatible = "ti,lm3532";
+               #address-cells = <1>;
+               #size-cells = <0>;
                reg = <0x38>;
 
                enable-gpios = <&gpio6 12 GPIO_ACTIVE_HIGH>;
 
-               lcd_backlight: backlight {
-                       compatible = "ti,lm3532-backlight";
+               ramp-up-us = <1024>;
+               ramp-down-us = <8193>;
 
-                       lcd {
-                               led-sources = <0 1 2>;
-                               ramp-up-msec = <1>;
-                               ramp-down-msec = <0>;
-                       };
+               lcd_backlight: led@0 {
+                       reg = <0>;
+                       led-sources = <2>;
+                       ti,led-mode = <0>;
+                       label = "backlight";
+                       linux,default-trigger = "backlight";
+               };
+
+               led@1 {
+                       reg = <1>;
+                       led-sources = <1>;
+                       ti,led-mode = <0>;
+                       label = "platform::kbd_backlight";
                };
        };
 };
-- 
2.20.1.390.gb5101f9297

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