memory: tegra: replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE

Fix the following coccicheck warning:

  drivers/memory/tegra/tegra124-emc.c:1207:0-23: WARNING:
    tegra_emc_debug_min_rate_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/1614243958-55847-1-git-send-email-yang.lee@linux.alibaba.comSigned-off-by: Krzysztof Kozlowski <krzk@kernel.org>

drivers/memory/tegra/tegra124-emc.c

@@ -1204,7 +1204,7 @@ static int tegra_emc_debug_min_rate_set(void *data, u64 rate)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(tegra_emc_debug_min_rate_fops,
+DEFINE_DEBUGFS_ATTRIBUTE(tegra_emc_debug_min_rate_fops,
 			tegra_emc_debug_min_rate_get,
 			tegra_emc_debug_min_rate_set, "%llu\n");
 
@@ -1234,7 +1234,7 @@ static int tegra_emc_debug_max_rate_set(void *data, u64 rate)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(tegra_emc_debug_max_rate_fops,
+DEFINE_DEBUGFS_ATTRIBUTE(tegra_emc_debug_max_rate_fops,
 			tegra_emc_debug_max_rate_get,
 			tegra_emc_debug_max_rate_set, "%llu\n");