devel/llvm13: update to 13.0.1

Disable FLANG on armv6 and armv7. It's not 32-bit clean and many
systems lack the RAM to build it natively.

Disable LLDB on riscv64, there is no riscv64 support. [0]

PR: 261374 [0]
MFH: 2022Q1
(cherry picked from commit b00578b9b208edb0f805a1b48e2d217435666f53)