sh: hp6xx: Fix up hp6xx_apm build failure.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/hp6xx/hp6xx_apm.c

@@ -27,6 +27,8 @@
 
 #define MODNAME "hp6x0_apm"
 
+#define PGDR	0xa400012c
+
 static void hp6x0_apm_get_power_status(struct apm_power_info *info)
 {
 	int battery, backup, charging, percentage;