hw/scripts: Issue 2nd reset after jlink load
hw/scripts: Issue 2nd reset after jlink load

After writing the binary to flash, reset the device a second time.  Some
devices seem to be stuck in a weird state when they are programmed
(e.g., looping in a default interrupt handler).  The reset clears the
bad state.

This "weird state" mostly happens when the device's internal flash is
automatically erased via JTAG lockout protection.  However, I have
occasionally seen this issue even when JTAG lockout is disabled.

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