package/glibc: Use 2.33 for RISC-V 32-bit

RISC-V 32-bit was special cased to use glibc master as support was not
in a released version.

Recently 2.33 was released, so RV32 can now use the same glibc version
as other platforms.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>