test/py: support 'memstart =' in u_boot_utils.find_ram_base()

Some archs like MIPS or PPC have a different 'bdinfo' output
than ARM regarding the memory configuration. Also support
'memstart = 0x*' in u_boot_utils.find_ram_base() to make
all tests requiring the RAM base working on those archs.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Acked-by: Stephen Warren <swarren@nvidia.com>

test/py/u_boot_utils.py

@@ -201,7 +201,7 @@ def find_ram_base(u_boot_console):
     with u_boot_console.log.section('find_ram_base'):
         response = u_boot_console.run_command('bdinfo')
         for l in response.split('\n'):
-            if '-> start' in l:
+            if '-> start' in l or 'memstart    =' in l:
                 ram_base = int(l.split('=')[1].strip(), 16)
                 break
         if ram_base is None: