Convert CONFIG_RESET_PHY_R to Kconfig

This converts the following to Kconfig:
   CONFIG_RESET_PHY_R

Cc: Ramon Fried <rfried.dev@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/km_kirkwood_pci_defconfig b/configs/km_kirkwood_pci_defconfig
index e4bd6df..22a4b66 100644
--- a/configs/km_kirkwood_pci_defconfig
+++ b/configs/km_kirkwood_pci_defconfig
@@ -20,6 +20,7 @@
 CONFIG_AUTOBOOT_STOP_STR=" "
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_MISC_INIT_R=y
+CONFIG_RESET_PHY_R=y
 CONFIG_HUSH_PARSER=y
 # CONFIG_BOOTM_NETBSD is not set
 # CONFIG_BOOTM_PLAN9 is not set