kernel: debug: Ordinary typo fixes in the file gdbstub.c

s/overwitten/overwritten/
s/procesing/processing/

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Link: https://lore.kernel.org/r/20210317104658.4053473-1-unixbhaskar@gmail.com


Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>