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/guruplug_defconfig b/configs/guruplug_defconfig
index e304675..e4809ca 100644
--- a/configs/guruplug_defconfig
+++ b/configs/guruplug_defconfig
@@ -18,6 +18,7 @@
 CONFIG_BOOTCOMMAND="setenv bootargs ${console} ${mtdparts} ${bootargs_root}; ubi part root; ubifsmount ubi:rootfs; ubifsload 0x800000 ${kernel}; ubifsload 0x700000 ${fdt}; ubifsumount; fdt addr 0x700000; fdt resize; fdt chosen; bootz 0x800000 - 0x700000"
 CONFIG_USE_PREBOOT=y
 # CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_RESET_PHY_R=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_FLASH is not set