qemu: step up QEMU revision to last known working commit

Upstream QEMU v7 does not seem to work, after bisecting we got:
    c79c0a314c target/arm: Implement new do_transaction_failed hook

as the first commit where we are getting regressions (OP-TEE reports
data-aborts). This commit does nothing to solve the regression, but it
will step up the revision of QEMU to the last known working revision.

Signed-off-by: Joakim Bech <joakim.bech@linaro.org>
Tested-by: Joakim Bech <joakim.bech@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
diff --git a/default.xml b/default.xml
index 41c935d..0aac425 100644
--- a/default.xml
+++ b/default.xml
@@ -23,5 +23,5 @@
         <!-- Misc gits -->
         <project path="busybox"            name="mirror/busybox.git" />
         <project path="qemu/dtc"           name="qemu/dtc.git" />
-        <project path="qemu"               name="qemu/qemu.git" revision="199e19ee538eb61fd08b1c1ee5aa838ebdcc968e" />
+        <project path="qemu"               name="qemu/qemu.git" revision="4672cbd7bed88dc67f089e84a0fd5d7739020c92" />
 </manifest>