gpio: stm32: Rename stm32f7_gpio to stm32_gpio

As this driver is used on stm32f4/f7/h7 and stm32mp1
SoCs, rename it with a more generic name.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 7337153..4a8aa0f 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -47,7 +47,7 @@
 obj-$(CONFIG_TCA642X)		+= tca642x.o
 obj-$(CONFIG_SUNXI_GPIO)	+= sunxi_gpio.o
 obj-$(CONFIG_LPC32XX_GPIO)	+= lpc32xx_gpio.o
-obj-$(CONFIG_STM32F7_GPIO)	+= stm32f7_gpio.o
+obj-$(CONFIG_STM32_GPIO)	+= stm32_gpio.o
 obj-$(CONFIG_GPIO_UNIPHIER)	+= gpio-uniphier.o
 obj-$(CONFIG_ZYNQ_GPIO)		+= zynq_gpio.o
 obj-$(CONFIG_VYBRID_GPIO)	+= vybrid_gpio.o