src/: Chmod 644 all .c, .h, .asl, .inc, .cb, .hex, & Kconfig files

Some trivial cleanup.

Change-Id: I866efc4939b5e036ef02d1acb7b8bb8335671914
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/13427
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
50 files changed