[roll] Roll fuchsia [input][goodix-gt6853] Add type-safe I2C unit

Implement MessageInterfaceUnitI2c using fidl_next for type-safe,
zerocopy I2C communication with the Goodix GT6853 touch IC.

Provide strongly-typed register read and write operations, and an
encapsulated MockI2cDevice test double in src/testing/ verifying
I2C transaction expectations.

      --with //src/ui/input/drivers/goodix-gt6853 \
      --with //src/ui/input/drivers/goodix-gt6853:tests

Original-Original-Bug: 527194998
Test: fx set core.x64 \
Test: fx test goodix-gt6853-rust-test
Original-Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1794777
Original-Original-Revision: ee1c4d312aad622c34668b9efb53d121c0b9795b
GitOrigin-RevId: 5c78ab40d7a757dc3e66bdda8997beecb97765f6
Change-Id: I230cbc7a224b7ab67e95bb10146c193a9ee45b34
Reviewed-on: https://fuchsia-review.googlesource.com/c/integration/+/1801577
Cr-Commit-Position: refs/heads/main@{#201043}

stem

diff --git a/stem b/stem
index 3d444f8..4cc00f4 100644
--- a/stem
+++ b/stem
@@ -8,6 +8,6 @@
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-            revision="605e9f935d9188601c1a62fdd379b1a57ef31a34"/>
+            revision="ee1c4d312aad622c34668b9efb53d121c0b9795b"/>
   </imports>
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