[PATCH 1/6] mmc: meson-gx-mmc: Fix platform_get_irq's error checking

Arvind Yadav [off-list ref] writes:

The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct.

Signed-off-by: Arvind Yadav <redacted>

Reviewed-by: Kevin Hilman <khilman@baylibre.com>