Add few more texture formats and comments

Wondering how to handle the following rare formats hummm

	CELL_GCM_TEXTURE_COMPRESSED_HILO8       = 0x98,
	CELL_GCM_TEXTURE_COMPRESSED_HILO_S8     = 0x99,

	CELL_GCM_TEXTURE_COMPRESSED_B8R8_G8R8   = 0xAD,
	CELL_GCM_TEXTURE_COMPRESSED_R8B8_R8G8   = 0xAE,