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_hs_evm_defconfig b/configs/am335x_hs_evm_defconfig
index c903cc7..a8ab3e6 100644
--- a/configs/am335x_hs_evm_defconfig
+++ b/configs/am335x_hs_evm_defconfig
@@ -9,6 +9,7 @@
 # CONFIG_SPL_NAND_SUPPORT is not set
 CONFIG_DEFAULT_DEVICE_TREE="am335x-evm"
 CONFIG_DISTRO_DEFAULTS=y
+CONFIG_SPL_SYS_MALLOC_F_LEN=0x1000
 CONFIG_ANDROID_BOOT_IMAGE=y
 CONFIG_FIT_IMAGE_POST_PROCESS=y
 CONFIG_SPL_LOAD_FIT=y