Enable I2CSLAVE for nRF52 targets

Author: AGlass0fMilk

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52832/config/sdk_config.h

@@ -3908,20 +3908,20 @@
 // <e> NRFX_TWIS_ENABLED - nrfx_twis - TWIS peripheral driver
 //==========================================================
 #ifndef NRFX_TWIS_ENABLED
-#define NRFX_TWIS_ENABLED 0
+#define NRFX_TWIS_ENABLED 1
 #endif
 // <q> NRFX_TWIS0_ENABLED  - Enable TWIS0 instance
 
 
 #ifndef NRFX_TWIS0_ENABLED
-#define NRFX_TWIS0_ENABLED 0
+#define NRFX_TWIS0_ENABLED 1
 #endif
 
 // <q> NRFX_TWIS1_ENABLED  - Enable TWIS1 instance
 
 
 #ifndef NRFX_TWIS1_ENABLED
-#define NRFX_TWIS1_ENABLED 0
+#define NRFX_TWIS1_ENABLED 1
 #endif
 
 // <q> NRFX_TWIS_ASSUME_INIT_AFTER_RESET_ONLY  - Assume that any instance would be initialized only once

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/config/sdk_config.h

@@ -3908,20 +3908,20 @@
 // <e> NRFX_TWIS_ENABLED - nrfx_twis - TWIS peripheral driver
 //==========================================================
 #ifndef NRFX_TWIS_ENABLED
-#define NRFX_TWIS_ENABLED 0
+#define NRFX_TWIS_ENABLED 1
 #endif
 // <q> NRFX_TWIS0_ENABLED  - Enable TWIS0 instance
 
 
 #ifndef NRFX_TWIS0_ENABLED
-#define NRFX_TWIS0_ENABLED 0
+#define NRFX_TWIS0_ENABLED 1
 #endif
 
 // <q> NRFX_TWIS1_ENABLED  - Enable TWIS1 instance
 
 
 #ifndef NRFX_TWIS1_ENABLED
-#define NRFX_TWIS1_ENABLED 0
+#define NRFX_TWIS1_ENABLED 1
 #endif
 
 // <q> NRFX_TWIS_ASSUME_INIT_AFTER_RESET_ONLY  - Assume that any instance would be initialized only once

targets/targets.json

@@ -11183,6 +11183,7 @@
             "FLASH",
             "I2C",
             "I2C_ASYNCH",
+            "I2C_SLAVE",
             "INTERRUPTIN",
             "ITM",
             "LPTICKER",
@@ -11567,6 +11568,7 @@
             "FLASH",
             "I2C",
             "I2C_ASYNCH",
+            "I2C_SLAVE",
             "INTERRUPTIN",
             "ITM",
             "LPTICKER",