libpayload: Add in a missing "static".

The readwrite_chunk was private to the usb mass storage driver, but wasn't
marked as static which was upsetting the compiler.

Change-Id: I0ef5c5f96a29f793dd43ff672a939902bad13c45
Signed-off-by: Gabe Black <>
Reviewed-by: Julius Werner <>
Commit-Queue: Gabe Black <>
Tested-by: Gabe Black <>
(cherry picked from commit 8140e6145b3d072b7f12a924418570022207c065)
Signed-off-by: Isaac Christensen <>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <>
Reviewed-by: Ronald G. Minnich <>
1 file changed