[MSP430] Recognize Bi as an indirect branch in analyzeBranch. NFC.
Recognize Bi as an unconditional branch, just like JMP. This allows
machine verification to run after MSP430BranchSelector without failing
virtual bool llvm::MSP430InstrInfo::analyzeBranch(llvm::MachineBasicBlock &, llvm::MachineBasicBlock *&, llvm::MachineBasicBlock *&, SmallVectorImpl<llvm::MachineOperand> &, bool) const: Assertion `I->getOpcode() == MSP430::JCC && "Invalid conditional branch"' failed.
Note that machine verification is currently disabled after
addPreEmitPass passes because of problems on other targets, so this is
Differential Revision: https://reviews.llvm.org/D110691