Upstream u-boot and hence u-boot-linaro have CONFIG_SYS_HUSH_PARSER set and CONFIG_SYS_PROMPT_HUSH_PS2 defined to "> " for mx51evk
Upstream u-boot and hence u-boot-linaro have CONFIG_ SYS_HUSH_ PARSER set and CONFIG_ SYS_PROMPT_ HUSH_PS2 defined to "> " for mx51evk