Increase event queue limit to 4000

Bug: 169089731
Test: m -j
Change-Id: I9fb8707a5eb190b5749af84e3eb65567b87439bc
Merged-In: I9fb8707a5eb190b5749af84e3eb65567b87439bc
(cherry picked from commit 29edf77b15d381c071bdd529f854fb07133c90ad)
1 file changed