Improve the condition of VRPBR register.
Improve the condition of VRPBR register.

Signed-off-by: Atsuhiro Ito <6fefdc48a0d35653aefd6d1b7c8bcd855d1a90b2@renesas.com>

kfish/libshveu,kfish/libshveu,matsu/libshvio,matsu/libshvio,kfish/libshveu