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[PATCH][MSP430] MSP430: Define __BUFSIZ__ as 256 to prevent default of 1024 being used

Many MSP430 devices have a very small amount of RAM (the MSP430FR5969
has 2kB). A simple "Hello World" printf program built for one of these
devices will not execute properly as stack and heap collide before
output is printed.
About 1.5kB of heap is allocated to do the printf, but reducing
__BUFSIZ__ to 256 brings this to around 750 bytes, and the hello world
program comfortably executes on hardware.

Patch is attached.

Attachment: 0001-MSP430-Define-__BUFSIZ__-as-256-to-prevent-default-o.patch
Description: Text document

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