target-tricore: properly fix dvinit_b/h_13 The TriCore documentation was wrong on how to calculate ovf bits for those two instructions, which I confirmed with real hardware (TC1796 chip). An ovf actually happens, if the result (without remainder) does not fit into 8/16 bits. Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>