RISC-V: re-order Kconfig selects alphanumerically

Selects should be sorted alphanumerically, and were tidied up originally
by Palmer in commit e8c7ef7d ("RISC-V: Sort select statements
alphanumerically") since then, things have gotten out of order again.
Fish RMK's original script out of commit b1b3f49c ("ARM: config:
sort select statements alphanumerically") and do some spring cleaning.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Björn Töpel <bjorn@rivosinc.com>
Link: https://lore.kernel.org/r/20221219172836.134709-1-conor@kernel.org


Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>