Blacklist blend equation advanced on Adreno 5xx devices

BUG=skia:5900

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4068

Change-Id: I5ac1b3862b1d76e50cbeb446029f1ae2d922702c
Reviewed-on: https://skia-review.googlesource.com/4068
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>

src/gpu/gl/GrGLCaps.cpp

@@ -972,6 +972,7 @@ void GrGLCaps::initBlendEqationSupport(const GrGLContextInfo& ctxInfo) {
     // Disabling advanced blend on various platforms with major known issues. We also block Chrome
     // for now until its own blacklists can be updated.
     if (kAdreno4xx_GrGLRenderer == ctxInfo.renderer() ||
+        kAdreno5xx_GrGLRenderer == ctxInfo.renderer() ||
         kIntel_GrGLDriver == ctxInfo.driver() ||
         kChromium_GrGLDriver == ctxInfo.driver()) {
         return;