u1sram: make default line_edit string be 2

Signed-off-by: Wang Xingchao <xingchao.wang@linux.intel.com>
u1sram: use button to increate loop_num value

Signed-off-by: Wang Xingchao <xingchao.wang@linux.intel.com>
u1sram_test: enable download library as hw bug fixed

Signed-off-by: Wang Xingchao <xingchao.wang@linux.intel.com>
u1sram_test: fix hw bug, test 100 times

Signed-off-by: Wang Xingchao <xingchao.wang@linux.intel.com>