riscv: Enable AI ram on K210

We just need to initialize all the clocks pre-reloc. The clock driver
creates a bunch of devices, so we need to increase the pre-reloc malloc
arena.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
diff --git a/configs/sipeed_maix_bitm_defconfig b/configs/sipeed_maix_bitm_defconfig
index 210848c..bd877cd 100644
--- a/configs/sipeed_maix_bitm_defconfig
+++ b/configs/sipeed_maix_bitm_defconfig
@@ -1,4 +1,5 @@
 CONFIG_RISCV=y
+CONFIG_SYS_MALLOC_F_LEN=0x10000
 CONFIG_ENV_SIZE=0x1000
 CONFIG_ENV_OFFSET=0xfff000
 CONFIG_ENV_SECT_SIZE=0x1000
@@ -7,6 +8,7 @@
 CONFIG_STACK_SIZE=0x100000
 CONFIG_USE_BOOTCOMMAND=y
 CONFIG_BOOTCOMMAND="run k210_bootcmd"
+CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_HUSH_PARSER=y
 CONFIG_MTDIDS_DEFAULT="nor0=spi3:0"
 CONFIG_MTDPARTS_DEFAULT="nor0:1M(u-boot),0x1000@0xfff000(env)"