For the HS48 processor, BR currently builds with -mcpu=hs4x_rel31 which generates suboptimal code as it inhibits delay slot and back-back ST and so on. Enable a new variant to build with -mcpu=hs4x for normal codegen. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> [yann.morin.1998@free.fr: - simplify dependencies on MMU page size - wrap long lines ] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>