fel: add Allwinner V5 SoC support

The V5 is (yet another) example of a more recent SoC with A7 cores, so
it goes with the H6 memory map and peripherals, but with 32-bit cores.

Add basic support, to facilitate development.

Signed-off-by: Andre Przywara <osp@andrep.de>

soc_info.c

@@ -421,6 +421,17 @@ soc_info_t soc_info_table[] = {
 		.sid_offset   = 0x200,
 		.icache_fix   = true,
 		.watchdog     = &wd_v853_compat,
+	},{
+		.soc_id       = 0x1721, /* Allwinner V5 */
+		.name         = "V5",
+		.spl_addr     = 0x20000,
+		.scratch_addr = 0x21000,
+		.thunk_addr   = 0x42200, .thunk_size = 0x200,
+		.swap_buffers = h6_sram_swap_buffers,
+		.sram_size    = 136 * 1024,
+		.sid_base     = 0x03006000,
+		.sid_offset   = 0x200,
+		.watchdog     = &wd_h6_compat,
 	},{
 		.swap_buffers = NULL /* End of the table */
 	}