samd/boards: Extend the code size limit for boards with external flash.

Code size limits are charged to:
- SAMD21:    184K -> 248K
- SAMD51x19: 368K -> 496K
- SAMD51x20: 368K -> 1008K

Signed-off-by: robert-hh <robert@hammelrath.com>

ports/samd/boards/ADAFRUIT_FEATHER_M0_EXPRESS/mpconfigboard.mk

@@ -6,3 +6,4 @@ TEXT0 = 0x2000
 # The ?='s allow overriding in mpconfigboard.mk.
 # MicroPython settings
 MICROPY_VFS_LFS1 ?= 1
+MICROPY_HW_CODESIZE ?= 248K

ports/samd/boards/ADAFRUIT_FEATHER_M4_EXPRESS/mpconfigboard.mk

@@ -6,3 +6,4 @@ TEXT0 = 0x4000
 # The ?='s allow overriding in mpconfigboard.mk.
 # MicroPython settings
 MICROPY_VFS_LFS1 ?= 1
+MICROPY_HW_CODESIZE ?= 496K

ports/samd/boards/ADAFRUIT_ITSYBITSY_M0_EXPRESS/mpconfigboard.mk

@@ -6,3 +6,4 @@ TEXT0 = 0x2000
 # The ?='s allow overriding in mpconfigboard.mk.
 # MicroPython settings
 MICROPY_VFS_LFS1 ?= 1
+MICROPY_HW_CODESIZE ?= 248K

ports/samd/boards/ADAFRUIT_ITSYBITSY_M4_EXPRESS/mpconfigboard.mk

@@ -6,3 +6,4 @@ TEXT0 = 0x4000
 # The ?='s allow overriding in mpconfigboard.mk.
 # MicroPython settings
 MICROPY_VFS_LFS1 ?= 1
+MICROPY_HW_CODESIZE ?= 496K

ports/samd/boards/ADAFRUIT_METRO_M4_EXPRESS/mpconfigboard.mk

@@ -10,3 +10,4 @@ MICROPY_PY_NETWORK ?= 1
 MICROPY_PY_NETWORK_NINAW10 ?= 1
 
 BOARD_VARIANTS += "wlan"
+MICROPY_HW_CODESIZE ?= 496K

ports/samd/boards/MINISAM_M4/mpconfigboard.mk

@@ -7,3 +7,4 @@ TEXT0 = 0x4000
 # The ?='s allow overriding in mpconfigboard.mk.
 # MicroPython settings
 MICROPY_VFS_LFS1 ?= 1
+MICROPY_HW_CODESIZE ?= 496K

ports/samd/boards/SEEED_WIO_TERMINAL/mpconfigboard.mk

@@ -6,3 +6,4 @@ TEXT0 = 0x4000
 # The ?='s allow overriding in mpconfigboard.mk.
 # MicroPython settings
 MICROPY_VFS_LFS1 ?= 1
+MICROPY_HW_CODESIZE ?= 496K

ports/samd/boards/SPARKFUN_SAMD51_THING_PLUS/mpconfigboard.mk

@@ -6,3 +6,4 @@ TEXT0 = 0x4000
 # The ?='s allow overriding in mpconfigboard.mk.
 # MicroPython settings
 MICROPY_VFS_LFS1 ?= 1
+MICROPY_HW_CODESIZE ?= 1008K