Update shader declarations to use 'uniform' instead of 'in'

Bug: 184822190
Test: atest librenderengine_test
Change-Id: I6d808885522f3c9ff2a1fe3340f08c2dabafd771
diff --git a/libs/renderengine/skia/filters/LinearEffect.cpp b/libs/renderengine/skia/filters/LinearEffect.cpp
index 84af016..8e8e42e 100644
--- a/libs/renderengine/skia/filters/LinearEffect.cpp
+++ b/libs/renderengine/skia/filters/LinearEffect.cpp
@@ -390,7 +390,7 @@
 
 static void generateEffectiveOOTF(bool undoPremultipliedAlpha, SkString& shader) {
     shader.append(R"(
-        in shader input;
+        uniform shader input;
         half4 main(float2 xy) {
             float4 c = float4(sample(input, xy));
     )");