powerpc/ps3: Add highmem repository write routines

Add routines to allow Linux based bootloaders to create and/or
modify highmem region info in the PS3 system repository where
it can be retrived by later boot stages.

Signed-off-by: Geoff Levand <geoff@infradead.org>
diff --git a/arch/powerpc/platforms/ps3/platform.h b/arch/powerpc/platforms/ps3/platform.h
index 1a633ed..4012a86 100644
--- a/arch/powerpc/platforms/ps3/platform.h
+++ b/arch/powerpc/platforms/ps3/platform.h
@@ -189,6 +189,15 @@
 int ps3_repository_read_mm_info(u64 *rm_base, u64 *rm_size,
 	u64 *region_total);
 
+int ps3_repository_write_highmem_region_count(unsigned int region_count);
+int ps3_repository_write_highmem_base(unsigned int region_index,
+	u64 highmem_base);
+int ps3_repository_write_highmem_size(unsigned int region_index,
+	u64 highmem_size);
+int ps3_repository_write_highmem_info(unsigned int region_index,
+	u64 highmem_base, u64 highmem_size);
+int ps3_repository_delete_highmem_info(unsigned int region_index);
+
 /* repository pme info */
 
 int ps3_repository_read_num_be(unsigned int *num_be);