CPU sub-types set the pclk default in Kconfig, add one
for SH7705.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
        default "50000000" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7780
        default "60000000" if CPU_SUBTYPE_SH7751
        default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
-                             CPU_SUBTYPE_SH7760
+                             CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705
        default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343
        default "66000000" if CPU_SUBTYPE_SH4_202
        help