sm8350-common: camera: Cap max_brightness

* Our maximum brightness is 500.
* However, for safety related reason, I have capped this to 255.
* 255 is more than sufficient, and I do not want to be responsible for LED damage.

* Finding the default percentage took some trial and error, in this case, 59% correlated to 75.

Co-authored-by: rahul <rahul@aospa.co>
Signed-off-by: rahul <rahul@aospa.co>

camera/CameraProviderExtension.cpp

@@ -43,14 +43,15 @@ bool supportsSetTorchModeExt() {
 }
 
 int32_t getTorchDefaultStrengthLevelExt() {
-    return 50;
+    // Our default value is 75. This corresponds to 15%.
+    // As we have changed the maximum value, 59% now corresponds to 75.
+    return 59;
 }
 
 int32_t getTorchMaxStrengthLevelExt() {
-    // In our device, both LEDs has same maximum value
-    // so get from one.
-    auto node = kTorchLedPath + "/" + TORCH_MAX_BRIGHTNESS;
-    return get(node, 0);
+    // 255 out of 500 is a sane brightness.
+    // Let's cap it to 255 as max, we can go much higher, but I don't want to test this.
+    return 255;
 }
 
 int32_t getTorchStrengthLevelExt() {