set input_block_timeout default value to 1

[hizzlekizzle]

Guidelines

1. Rebase before opening a pull request
2. If you are sending several unrelated fixes or features, use a branch and a separate pull request for each
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Description

Hitting >= 2 buttons simultaneously on Android can be difficult, so we added the input_block_timeout setting, but we left the default value to 0. Setting it to 1 greatly improves the situation and only adds a single millisecond of latency, so I think it's worth bumping the default value to 1.

Related Issues

I don't know of any open tickets, but it's something that comes up often on the subreddit, like this one: https://www.reddit.com/r/RetroArch/comments/1qqifcj/captain_america_the_avengers_projectile_special/

Related Pull Requests

none

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