configs: am335x_evm: Increase SPL_SYS_MALLOC_F_LEN to accomodate gpio_devices

With gpio devices getting created in SPL, the size of the heap is
no longer sufficient. Therefore, increase SPL_SYS_MALLOC_F_LEN
to 0x1000.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/am335x_evm_defconfig b/configs/am335x_evm_defconfig
index 60120bf1..d1c78fa 100644
--- a/configs/am335x_evm_defconfig
+++ b/configs/am335x_evm_defconfig
@@ -4,6 +4,7 @@
 CONFIG_AM33XX=y
 CONFIG_DEFAULT_DEVICE_TREE="am335x-evm"
 CONFIG_DISTRO_DEFAULTS=y
+CONFIG_SPL_SYS_MALLOC_F_LEN=0x1000
 CONFIG_SPL_LOAD_FIT=y
 CONFIG_BOOTCOMMAND="if test ${boot_fit} -eq 1; then run update_to_fit; fi; run findfdt; run init_console; run envboot; run distro_bootcmd"
 CONFIG_SYS_CONSOLE_INFO_QUIET=y