[kernel]: fix incorrect %hh format output for values in [0x80, 0xff]#11210

Rbb666 merged 1 commit intoRT-Thread:masterRT-Thread/rt-thread:masterfrom

rsj123:fix/vsnprintf-tiny-hh-qualifierrsj123/rt-thread:fix/vsnprintf-tiny-hh-qualifierCopy head branch name to clipboard