mmc: mmc_card_keep_power cleanups

mmc_card_is_powered_resumed is a mouthful; instead, simply use
mmc_card_keep_power, which also better explains the purpose of
the macro.

Employ mmc_card_keep_power() where possible.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index eb792cb..8ad3a9c 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -320,7 +320,7 @@
 	return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable;
 }
 
-static inline int mmc_card_is_powered_resumed(struct mmc_host *host)
+static inline int mmc_card_keep_power(struct mmc_host *host)
 {
 	return host->pm_flags & MMC_PM_KEEP_POWER;
 }